最新刊期
卷 46 ， 期 10 ， 2025
- “在近红外生物标记领域，研究人员基于尺寸限域效应调控CuInSe2量子点发光，开发出高灵敏均相检测ATP分子的量子点探针，为近红外生物成像和疾病诊疗提供新方向。”摘要：CuInSe2 （CISe） quantum dots （QDs） exhibit narrow direct bandgap， large exciton Bohr radius， and broadband excitation， rendering them exceptional candidates for near-infrared luminescent bioapplications. However， conventional strategies for luminescence modulation like composition engineering and Zn2+ doping， often induce emission blueshift in CISe QDs. Moreover， current CISe nanoprobes predominantly rely on ultraviolet-visible light excitation， which suffers from significant tissue scattering and photothermal damage， severely limiting their bioapplication performance. To address these challenges， developing NIR-excitable/emissive CISe nanoprobes holds critical value. Herein， we propose a novel strategy based on size confinement effects to regulate CISe luminescence. Through precise control of QDs size from 2.6 nm to 7.3 nm， we achieved an unprecedented continuous tuning of the emission peak position across a wide range of 900-1 205 nm upon NIR excitation. Leveraging the stable NIR luminescence and good biosafety of CISe QDs， we constructed a unique CISe QD@Cr3+ cluster nanoprobe for homogeneous adenosine triphosphate （ATP） detection， resulting in high sensitivity with a detection limit of 45.8 nmol/L. Furthermore， we demonstrated ATP-targeted NIR imaging in cancer cells， highlighting the potential of CISe QDs in advanced bioapplications such as NIR bioimaging and theranostics.关键词：CuInSe2;quantum dots;near-infrared luminescence;nanoprobes;adenosine triphosphate312|104|0更新时间：2025-10-30
Cover Story
- “近红外二区b窗口荧光成像技术取得突破，稀土发光纳米晶为肿瘤诊疗一体化提供新思路。”摘要：Near-infrared-Ⅱb （NIR-Ⅱb） fluorescence exhibits exceptional deep-tissue penetration， low scattering characteristics， and a high signal-to-noise ratio. By effectively suppressing tissue autofluorescence and photon scattering， NIR-Ⅱb fluorescence has achieved unprecedented spatial resolution and signal-to-noise ratio， thereby emerging as a research frontier in precision medical imaging. Rare-earth luminescent nanocrystals with lanthanide elements as core components， serving as unique optical probes， leverage the distinctive 4f electronic transitions to generate narrowband emission through upconversion/downconversion luminescence mechanisms under near-infrared excitation. Their millisecond-scale luminescence lifetime further establishes them as an ideal solution for NIR-Ⅱb imaging. Recent advances in energy-level engineering and surface modification strategies have successfully integrated multifunctional therapeutic capabilities， including photothermal therapy， photodynamic therapy and immunotherapy， establishing integrated theranostics as an innovative paradigm in tumor treatment. This review systematically summarizes groundbreaking progress in NIR-Ⅱb-emitting rare-earth nanocrystals for biomedical imaging and oncotherapy， aiming to inspire innovative research directions for next-generation precision medicine.关键词：near-infrared-Ⅱb;rare-earth luminescent nanocrystals;biological imaging;tumor therapy182|107|0更新时间：2025-10-30
- “在肿瘤治疗领域，光致焦亡研究取得新进展，为从局部杀伤到全身免疫激活提供创新策略。”摘要：Pyroptosis， as a form of immunogenic cell death mediated by the gasdermin protein family， not only directly kills tumor cells， but also activates systemic anti-tumor immune responses. Traditional chemotherapy drugs induce pyroptosis have limitations such as drug resistance， systemic toxicity and inflammatory out of control. Phototherapy mediated by near-infrared light （such as photodynamic therapy， photothermal therapy） provides a new direction for the precise activation of pyroptosis with its spatio-temporally controllability and low side effect characteristics. This review systematically summarizes the core mechanism of photopyroptosis and the research progress of immunotherapy initiated by spatio-temporally controlled pyroptosis activation through photo-controlled ROS generation （PDT）， photothermal therapy （PTT）， photoredox catalysis， and photo-synergistic therapy. Although photopyroptosis still faces challenges of inflammation regulation， hypoxia in tumor microenvironment， and biocompatibility of photosensitizers， its advantages of combining photo-control precision and pyroptosis immunogenicity provide an innovative strategy for the transition from local killing to systemic immune activation in tumor treatment.关键词：pyroptosis;phototherapy;ROS;immunotherapy239|176|0更新时间：2025-10-30
Invited Paper
- “报道：六方氮化硼作为低维材料，在光电子学等领域展现卓越性能。专家系统介绍了其结构和性能，探讨了制备方法和应用进展，为未来发展提供方向。”摘要：Hexagonal boron nitride （h-BN） is a representative wide-bandgap two-dimensional layered material with an atomically complete surface and no dangling bonds and charged impurities， and has excellent mechanical stability， thermal stability and chemical inertness. Because it exhibits extraordinary properties in the fields of optoelectronics， quantum optics and electronics， it has become a low-dimensional substrate material carrier for various application scenarios. In this paper， the basic structure of h-BN and the properties of optoelectal， mechanical， thermal and other aspects are systematically introduced， and then the latest preparation methods of h-BN are described， including exfoliation， chemical and physical vapor deposition， and molecular beam epitaxy. Then， the latest research progress of h-BN device applications is introduced from multiple dimensions， such as transfer medium， FET gate dielectric layer， DUV optoelectronic device， single photon source and neutron detection. Finally， based on the research status and key problems of h-BN， some challenges and bottlenecks are analyzed， and the future development direction is proposed.关键词：two-dimensional materials;hexagonal boron nitride;preparation methods;optoelectronic applications235|448|0更新时间：2025-10-30
- “蓝光激光/LED驱动的固态照明器件研究取得新进展，复合结构荧光材料为提升光色品质、散热性能和光提取效率提供新思路。”摘要：Solid-state lighting devices driven by blue laser/LED have shown broad application prospects in fields such as automotive headlamps， military lighting， and medical endoscopes， owe to their significant advantages of high luminous efficiency， low energy consumption， and long service life. As the key wavelength conversion materials of laser/LED lighting devices， the structural design of phosphor materials （both macroscopic and microscopic） directly determines the color quality， chromaticity parameters and long-term service stability of the devices. However， conventional phosphor materials generally face serious problems such as severe thermal accumulation， low light extraction efficiency， and chromatic instability under high-power-density blue LD/LED excitation， which seriously restrict the development of lighting devices. For this reason， composite-structure phosphor materials with excellent optical， thermal and physicochemical stability properties have emerged as the key breakthrough to solve the above problems. This review systematically summarizes recent advances in composite-structure phosphor materials for high-powder laser/LED lighting applications. From multiple dimensions such as macroscopic （homogeneous/heterogeneous composite structures， high thermal conductivity composite structures， special configuration designs） to microscopic （introduction of media and micro-pores）， it elaborates in detail the regulation strategies of the color quality， heat dissipation performance and light extraction efficiency of phosphor materials. Furthermore， the challenges faced by composite-structure phosphor materials in terms of luminescence saturation mechanism， heat generation mechanism and thermal management， reabsorption and packaging mode are deeply discussed， and the future development direction in new lighting technology is prospected.关键词：phosphor materials;laser lighting;white LED;composite structure;photothermal property224|143|0更新时间：2025-10-30
Invited Review
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One-step
in -situ Synthesis of Cs₂NaInCl₆@PVDF Films: Doping Regulation and Optical Properties 增强出版 AI导读“无铅卤化物双钙钛矿发光膜研究取得新进展，采用一步法原位合成Cs2NaInCl6@PVDF薄膜，实现了明亮的蓝光发射和颜色可调的双色发光，为推动其在照明和显示领域的应用奠定了基础。”摘要：Lead-free halide double perovskites （DPs） are emerging as one of the most promising alternatives to lead halide perovskites， due to their non-toxicity， high efficiency， stability， and excellent optoelectronic properties. These attributes make them highly attractive for applications in lighting and display technologies. However， the current fabrication methods for double perovskite luminescent films are often complex and associated with significant safety concerns， which severely hinder their commercialization. In this study， we present a one-step in-situ synthesis of Cs2NaInCl6@PVDF （polyvinylidene fluoride） films. By doping the Cs2NaInCl6 host material with Sb3+， we successfully overcame the parity-forbidden transitions， enabling bright blue luminescence from self-trapped excitons （STEs）. The resulting emission peak is centered at 450 nm， with a full width at half maximum （FWHM） of approximately 80 nm and a maximum photoluminescence quantum yield （PLQY） of 71.0%. The film demonstrates remarkable thermal stability， retaining over 90% of its initial PLQY after continuous heat treatment at 333 K for 7 days. Furthermore， we extended this approach by co-doping with Mn2+， which introduced red luminescence from Mn2+ ions. By tuning the Mn2+/Sb3+ doping ratio， we achieved color-tunable dual-emission films that can be tailored for specific applications. This work provides an efficient and straightforward synthetic strategy for preparing double perovskite luminescent films with superior optoelectronic properties， thereby laying a solid foundation for their practical applications in lighting and display technologies.关键词：in situ synthesis;double perovskite;two colors luminescence;photoluminescence;Cs2NaInCl6@PVDF194|53|0更新时间：2025-10-30
Editor's Choice
- “In the field of quantum dots-based light-emitting diodes (QLEDs), researchers have made significant progress. They used time-resolved electroluminescence (TrEL) spectra to explore the injection, transportation, and recombination processes of charge carriers in QLEDs with multiple emitting layers (M-EMLs). The results provide solutions to improve the performance of QLEDs with M-EMLs.”摘要：The charge carrier transport and recombination dynamics in the quantum dots-based light-emitting diodes （QLEDs） featuring multiple emitting layers （M-EMLs） has a great impact on the device performance. In this work， QLEDs based on M-EMLs separated by polyethyleneimine ethoxylated （PEIE） layer with different stacking sequences of blue （B）， green （G）， and red （R） QDs layer were used to intuitively explore the injection， transportation and recombination processes of the charge carriers in QLEDs by using the time-resolved electroluminescence （TrEL） spectra. From the TrEL spectra measurements， green and red emissions were obtained first in the QLEDs with the EMLs sequences of G/PEIE/B/PEIE/R and B/PEIE/R/PEIE/G along the direction of light emission， respectively. While the QLEDs adopt EMLs sequences of B/PEIE/G/PEIE/R， the blue， green and red emissions were obtained nearly at the same time. The above phenomenon can be attributed to different charge carrier transmission and radiation recombination process in the EMLs due to different valence band offsets and conduction band offsets between R-， G- and B-QDs by using different sequences of EMLs. White emission with coordinates of （0.31， 0.31） and correlated color temperature （CCT） of 5 916 K was obtained in the QLEDs with the EMLs sequences of B/PEIE/G/PEIE/R， which can be attributed to the relative uniform emission of B-， G- and R-QDs due to the effective injection and radiation recombination of charge carriers in each of the EMLs. The above results have great significance for further understanding and improving the performance of QLEDs with M-EMLs.关键词：White QLEDs;multiple emitting layers;TrEL spectra;charge carrier dynamics159|109|0更新时间：2025-10-30
Rebirth after rejection by SCI journals
- “在固态照明领域，通过La/Sr异价取代策略，成功制备了系列发光可调的荧光材料，实现了宽带单一基质白光发射，为白光LED器件提供解决方案。”摘要：Single-host white emitting materials have emerged as a research hotspot in solid-state lighting due to their superior chromatic stability and simplified encapsulation processes. However， achieving warm white light emission through single-activator ions remains challenging due to narrow emission spectra and low efficiency. In this study， a series of luminescent-tunable La7.75-xSrxLu1.25Bi（SiO4）6O3∶0.03Eu2+ phosphors were successfully synthesized via a La/Sr heterovalent substitution strategy， which regulates the occupancy ratio of Eu2+ in different lattice sites. When x=0， the material exhibits only a narrow-band green emission at 520 nm. As the Sr2+ doping concentration increases （x=1-3.5）， the Eu2+ occupancy expands from dual-site to four-site configurations， resulting in broadband warm white light emission spanning 450-750 nm with a quantum efficiency of 72.5%. Concurrently， heterovalent substitution introduces defect energy levels， enhancing thermal stability by approximately 4 times. The optimized La4.25Sr3.5Lu1.25Bi（SiO4）6O3∶Eu2+ sample was encapsulated with a 365 nm UV chip， achieving a white LED device with a color rendering index （CRI） of 72 and a correlated color temperature （CCT） of 4 853 K.关键词：rare-earth luminescence;single host;Eu2+ doped;warm white light157|70|0更新时间：2025-10-30
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Mid-infrared Emission Properties of Ho3+-doped Fluorozirconate Glasses Pumped by 1 150 nm Laser 增强出版 AI导读
“氟锆基玻璃掺杂Ho3+离子，实现2.0 μm、2.9 μm和3.9 μm波段中红外荧光发射，为高效发光提供理论依据和实验参考。”摘要：In this paper， Ho3+ ion-doped fluorozirconate glasses （ZBYA） were prepared by traditional melt-quenching method. According to the absorption spectrum of Ho3+ ions， the mid-infrared fluorescence emission at 2.0 μm， 2.9 μm and 3.9 μm band and the 5I6，5I7 energy level lifetime of different Ho3+ ions doping concentration in ZBYA glasses were measured by 1 150 nm laser exciting. The maximum emission cross-section of the Ho3+： 5I5→5I6 transmission was estimated to be 0.55×10-21 cm2 by Fuchtbauer-Ladenburg theory. Additionally， the luminescence mechanism of Ho3+ ion-doped fluorozirconate glass under the excitation of 1 150 nm laser was analyzed. The results provide theoretical and experimental basis for selection of rare earth doped matrix glasses and pumping method to achieve efficient 3.9 μm fluorescence emission.关键词：Ho3+ ion;fluorozirconate glass;mid-infrared;3.9 μm emission130|105|0更新时间：2025-10-30 -
Luminescence Properties of Tb3+ Doped High-density Germanate Scintillating Glasses for X-ray Imaging 增强出版 AI导读
“In the realm of high-density germanate scintillating glasses, researchers have synthesized Tb3+-doped materials using the melt-quenching method. The study characterized the glasses' physical and luminescent properties, revealing their potential as scintillation materials for X-ray imaging applications. Expert research verified the potential of these glasses, which provides solutions to solve problems in X-ray imaging.”摘要：High-density germanate glasses doped with Tb3+ ions were synthesized via the melt-quenching method. The physical and luminescent properties of these glasses were characterized through various techniques， including density measurement， differential scanning calorimetry （DSC）， photoluminescence （PL） spectroscopy， X-ray excited luminescence （XEL） spectroscopy， and fluorescence decay analysis. The densities of the germanate glasses were greater than 6.1 g/cm3. Upon excitations of ultraviolet （UV） light and X-rays， the glasses emitted intense green emissions. The fluorescence lifetime of the strongest emission peak at 544 nm， measured under 377 nm excitation， ranged from 1.52 ms to 1.32 ms. In the glass specimens， the maximum XEL integral intensity reached roughly 26% of that of the commercially available Bi4Ge3O12（BGO） crystal. These results indicate that Tb3+-doped high-density germanate scintillating glasses hold potential as scintillation materials for X-ray imaging applications.关键词：Germanate glass;Scintillating glass;Tb3+;Luminescent properties;High density211|85|0更新时间：2025-10-30 - 摘要：This study aims to solve the bottleneck problems of the traditional triplet triplet annihilation （TTA） upconversion system， such as poor water dispersion， strong oxygen sensitivity and insufficient photostability， and develop solid-state upconversion probes （TTA-UNCPs） based on hollow mesoporous silica nanoparticles （HMSNs）. HMSNs carriers were prepared by reverse microemulsion method and selective etching technology. Platinum octaethyl porphyrin （PtOEP） sensitizer and 9，10-diphenylanthracene （DPA） annihilator were co-loaded on the HMSNs carriers using the cavity confinement effect， and polyethylene glycol folate （PEG-FA） bifunctional modification was carried out by amide reaction to improve the biocompatibility and targeting. The experimental results show that the nano confinement effect of HMSNs significantly inhibits oxygen quenching （oxygen sensitivity decreases to 6.4%， which is about 10.3 times lower than that of organic phase system）. After washing the optimized molecular arrangement with THF/H2O mixed solvent， the peak upconversion fluorescence intensity at 441 nm increased by about 3.5 times. At low excitation power （threshold ~5 MW·cm-2）， the system exhibits nonlinear luminescence characteristics and excellent optical stability. Cell experiments confirmed its low toxicity （HepG2 cell survival rate >84% at 250 μg·mL-1） and high-efficiency intracellular targeting imaging ability. This study provides a new strategy for the construction of efficient and stable low-power excitation biological imaging probe.关键词：upconversion nanoparticles;fluorescent probe;bioimaging;triplet-triplet annihilation;hollow mesoporous silica nanoparticles136|11|0更新时间：2025-10-30
- “最新研究揭示了手性卤化物钙钛矿材料在手性光电子学等领域的应用潜力，为非线性光学研究提供新思路。”摘要：Chiral halide perovskites have exceptional optoelectronic properties of halide perovskites and chiral properties of chiral molecule， therefore they show great potential in chiral-optoelectronic， spintronic and quantum photonic applications. However， the chiral and nonlinear optical properties of chiral two-dimensional （2D） and quasi-2D halide perovskites are still not well-understood. In this study， we prepared precursor solutions with varying stoichiometric ratios to fabricate 2D and quasi-2D chiral perovskite thin films of （R-/S-3BrMBA）2（Cs0.5MA0.5）<n>-1Pb<n>I3<n>+1 （<n>=1， 2， 3） via the solution spin-coating method. Chirality was successfully transferred from chiral organic cations to perovskite sublattices. We further revealed the second harmonic generation （SHG） of quasi-2D chiral halide perovskites for the first time to the best of our knowledge. We found that the SHG efficiency has a significant dependence on excitation wavelength and shows a remarkable exciton resonance phenomenon. Our findings provide new insights in nonlinear optical properties and potential application of chiral halide perovskites.关键词：chiral halide perovskites;nonlinear optics;second harmonic generation;circular dichroism120|125|0更新时间：2025-10-30
- “最新研究发现，稀土掺杂上转换纳米颗粒与金属氧化物复合，制备出高效光催化纳米团簇材料，实现了宽禁带半导体氧化物在近红外波段的敏化激发，显著提高了光催化性能。”摘要：This study successfully prepared efficient photocatalytic nanocluster materials by combining rare earth-doped upconversion nanoparticles （NaREF₄） with metal oxides （TiO₂， ZnO）. By employing a high-concentration Yb³⁺ doping strategy through shell layer epitaxy， the emission of ultraviolet light was enhanced. Furthermore， a core-shell structure was constructed， utilizing the physical isolation effect of the inert shell layer to effectively suppress the fluorescence quenching phenomenon caused by surface defects in the luminescent centers. Using a water-in-oil microemulsion self-assembly technique， NaREF₄/MO nanoclusters with a hierarchical structure were fabricated. This composite system successfully achieved sensitized excitation of wide bandgap semiconductor oxides in the near-infrared region through an interfacial energy transfer mechanism. Under the irradiation of a xenon lamp， the photocatalytic performance of the nanoclusters was verified by the degradation of methylene blue dye. Experimental results demonstrated that the NaREF₄/MO nanocluster structure exhibited excellent catalytic performance， with precise control over the catalytic effect achieved by adjusting the ratio of NaREF₄ to MO （1∶2）， resulting in a degradation rate of 100% after 20 min of irradiation. This performance was 40% higher than that of pure ZnO nanoparticles under the same conditions for the degradation of methylene blue solution.关键词：sodium rare earth fluoride;wide-bandgap metal oxides;photocatalysis;upconversion nanoparticle;nanoclusters161|73|0更新时间：2025-10-30
Synthesis and Properties of Materials
- 摘要：Solid-state master oscillator power amplifier （MOPA） lasers are devices that combine the master oscillator and power amplifier of solid-state lasers to amplify low-power signals and output high-power lasers. They are widely used in laser processing， precision measurement， medical treatment， and scientific research. Beam quality， as a key indicator of laser output performance， directly determines the effect and accuracy of the laser in these applications. However， due to the thermal effect in solid-state MOPA lasers， the beam quality often deteriorates continuously during the laser output process， leading to performance degradation. Therefore， optimizing beam quality has become a key to improving laser performance and has significant research and practical significance in the design and application of lasers. This paper reviews the research progress of beam quality optimization techniques for solid-state MOPA lasers， focusing on introducing optimization methods such as thermal effect suppression technology， negative lens method， phase conjugation method， deformable mirror method， spherical aberration self-compensation method， gain guiding method， and beam shaping method. By analyzing the principles， experimental progress， and application effects of these technologies， the challenges and innovative achievements in improving beam quality are discussed. In addition， the difficulties in optimizing beam quality under high-power and high-efficiency conditions for solid-state MOPA lasers are pointed out by the article， and possible future research directions and technological breakthroughs are anticipated.关键词：master oscillator power amplifier（MOPA）;beam quality;wavefront distortion;aberration correction132|116|0更新时间：2025-10-30
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Highly Sensitive Broad Organic Photodetector Based on Alumina Interface Modification Layer 增强出版 AI导读
“最新研究突破了有机光电探测器在宽谱响应和高灵敏度的挑战，为高灵敏度、宽光谱响应的有机光电探测器设计提供了新思路。”摘要：Organic photodetectors （OPDs） have garnered significant attention in the fields of biomedical imaging， environmental monitoring， and optical communication due to their advantages of material diversity， flexibility， and biocompatibility. However， constrained by the absorption bandgap of organic materials and high dark current， existing OPDs still face challenges in achieving broadband response and high sensitivity. In this study， we choosed the ZnPc∶C60 as the active layer， and the interfacial chemical reactions between the ITO anode and the ZnPc hole transport layer were effectively suppressed by introducing an aluminum oxide interface modification layer. Thus， the dark current density of the device was reduced to 4×10-7 A/cm² and the light-to-dark current density ratio of the device was increased to 3 500. Furthermore， Raman spectroscopy confirms that there is an intermolecular charge transfer effect between ZnPc and C60， which effectively broaden the response range of the device with stable spectral response characteristics of 375-1 550 nm. After further optimization， the device yielded an external quantum efficiency （EQE）， responsivity （R）， and detectivity （D*） of 72.4%， 0.21 A/W， and 4.05×1011 Jones， respectively， at a wavelength of 365 nm. Additionally， the device demonstrated photomultiplication behavior at the wavelengths of 580 nm and 735 nm， achieving optimal EQE， R， and D* values of 128.3%， 0.75 A/W， and 1.44×1012 Jones， respectively. This study provides a new approach for designing high-sensitivity， and broadband organic photodetectors.关键词：photodetector;organic small molecule;interface modification;intermolecular charge transfer;Al₂O₃166|202|0更新时间：2025-10-30 - “最新研究揭示了半导体增益芯片在量子精密测量等领域的应用潜力，通过优化量子阱厚度和应变，显著提升了偏振消光比和输出功率。”摘要：The semiconductor gain chip， serving as the active medium of external cavity semiconductor lasers （ECSL）， directly determines the core performance of the laser through its characteristics including output power， polarization dependence， and linewidth enhancement factor. To enhance the polarization extinction ratio of semiconductor gain chips and mitigate mode competition-induced noise in lasers， this study investigates the effects of quantum well thickness and quantum well strain on the material gains of transverse electric （TE） and transverse magnetic （TM） modes， while simultaneously exploring the influence of cavity length on the output power and spontaneous emission spectrum of the gain chip. By introducing compressive strain into the InGaAs/AlGaAs quantum wells， the material gain difference between TE and TM modes was significantly enhanced， resulting in an 850 nm-band semiconductor gain chip with pronounced polarization characteristics. The optimized device demonstrates a maximum polarization extinction ratio of 9.58 dB， a broad spontaneous emission spectral bandwidth of 28.72 nm， and a peak output power of 28.53 mW. This work provides an active gain medium with distinctive polarization properties for applications requiring narrow-linewidth linearly polarized lasers in quantum precision measurement， coherent lidar systems， and coherent optical communications.关键词：gain chip;external-cavity semiconductor laser;quantum well;polarization extinction ratio;linear polarization157|202|0更新时间：2025-10-30
- “在激光技术领域，研究人员开发了一种微米级尺寸的微球腔近红外激光发射装置，具有高Q值和高光学损伤阈值，能在复杂环境中稳定工作。”摘要：In this paper， a microscale near-infrared microsphere laser was demonstrated， based on a phase-separated glass matrix doped with Ho3+ ions. The glass microsphere with a diameter of 42.81 μm was fabricated， exhibiting a high optical quality factor （Q） of 1.25 × 106 and a high damage threshold. Pump light was coupled into the microsphere using a tapered optical fiber， resulting in efficient excitation of the rare-earth ions， and single-mode laser emission at 2.04 μm was observed from the microspherical resonator. Additionally， the glass transition temperature （Tg） was employed as an indicator of the device’s resistance to laser-induced damage， confirming that stable operation can be achieved under complex environmental conditions.关键词：Ho3+ ion;fluorosilicate glass;near-infrared laser138|84|0更新时间：2025-10-30
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Photoelectric Performance of AlGaInP-based Flip-chip Micro-LEDs with Honeycomb Surface Texture 增强出版 AI导读
“在提升AlGaInP基红光Micro-LED发光强度领域，研究人员采用自组装Ni金属纳米掩模和湿法刻蚀技术，成功制备高密度、高均匀性GaP表面纹理，有效提高器件光提取效率。”摘要：The low light extraction efficiency of AlGaInP-based red light Micro-LEDs limits the luminescence intensity of the devices. A self-assembled Ni metal nanomask and wet etching technique was proposed to obtain GaP surface texture with high density and high uniformity. The critical angle is increased by surface texture to reduce the total internal reflection effect， thereby effectively improving the efficiency of light extraction. Different surface textures were obtained by using nickel masks of different thicknesses. The results show that at a current density of 20 A/cm2， the luminescent intensity and external quantum efficiency of the Micro-LED wet-etched with a 1 nm thick nickel metal nano-mask are increased by 21.04% and 23.58%， respectively， compared with the Micro-LED without surface texture. Another method for preparing honeycomb cylindrical surface texture using ICP dry etching combined with wet etching was proposed. The GaP layer was wet-etched for different durations after the same ICP etching process. The results show that when the current density is 20 A/cm2， the luminous intensity and external quantum efficiency of Micro-LED etched by ICP and wet etching for 10 s *3 times are increased by 81.61% and 48.40%， respectively， compared with the Micro-LED without surface texture.关键词：AlGaInP;flip-chip;light extraction efficiency;micro-LED;surface texture87|72|0更新时间：2025-10-30
Device Fabrication and Physics
- “在光学领域，研究者开发出一种新型单层介电超表面，具有本征手性响应，可实现圆偏振光选择性透过，为光学加密等领域提供新方案。”摘要：Metasurfaces with chiral responses are widely used in optics. To achieve a strong chiral response， most metasurface structures typically use two or more stacked layers of subwavelength structures with rotation or offset. However， the requirement for highly precise alignment increases the manufacturing difficulty and cost. This work introduces a single-layer dielectric metasurface with an intrinsic chiral response operating in the red light band. It has a circular dichroism transmittance of 0.643 at 665 nm. Multipole decomposition analysis reveals that the several dipoles dominate the Mie resonance affecting the light scattering behavior. By analyzing the locally enhanced electric field distribution， it is revealed that the metasurface employs a C2-symmetric structure to regulate constructive and destructive interference， enabling selective transmission of circularly polarized light. These findings could expand the application of chiral dielectric metasurfaces in optical encryption， displays， and biological sensing.关键词：dielectric metasurface;chiral response;circular dichroism;visible light;circularly polarized light112|91|0更新时间：2025-10-30
Luminescence Applications and Interdisciplinary Fields
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