最新刊期
卷 47 ， 期 9 ， 2026
- 摘要：To address the limitations of conventional rare-earth-doped perovskites， including unidirectional energy transfer， restricted emission modes， and weak interfacial coupling in physically mixed systems， this study reports the fabrication of embedded NaYF4∶Yb，Tm@CsPbBr3 heterostructure nanocrystals， achieving efficient green emission under dual excitation at 365 nm and 980 nm. This system achieves two key advances： first， the establishment of an energy transfer pathway from rare-earth ions to the perovskite， wherein Yb3+ sensitizes Tm3+ under 980 nm near-infrared excitation and efficiently transfers energy to the perovskite emission center via energy level matching； second， the adoption of an embedded hybrid structure that ensures tighter interfacial coupling compared to physical mixtures. Luminescence decay curves and transient absorption （TA） spectroscopy confirm that this architecture suppresses defect-mediated nonradiative recombination and significantly prolongs carrier lifetime. Temperature-dependent PL studies reveal that at 320 K， the heterostructure retains 48% of its emission intensity， markedly higher than 34% for pure CsPbBr3， demonstrating enhanced thermal stability. This design provides a novel strategy for interface engineering and dual-mode emission in rare-earth-doped perovskite composites.关键词：perovskite nanocrystals;rare earth doping;heterostructure;energy transfer484|152|0更新时间：2026-09-30
Cover Story
- 摘要：Phosphor-converted light-emitting diodes （pc-LEDs） based on a “blue GaN chip + short-wave infrared （SWIR） phosphor” architecture offer several advantages， including compact size， low power consumption， broad emission spectra， low cost， and ease of integration. They are therefore regarded as an important technological route toward portable and intelligent SWIR light sources. However， as the emission wavelength is further red-shifted from the near-infrared region to the SWIR region， phosphor materials typically suffer from significantly enhanced multiphonon nonradiative relaxation， leading to reduced external quantum efficiency， deteriorated thermal stability， and insufficient device output power. Recently， Li et al. reported a class of highly efficient Cr3+-doped ternary rare-earth sulfide phosphors， NaLnS2∶Cr3+ （Ln=Lu， Y， Gd）. This study proposes and validates a new paradigm for SWIR luminescence that differs from the conventional crystal-field engineering strategy used in oxide phosphors. Specifically， the strong covalency of the sulfide host induces a pronounced nephelauxetic effect， reducing the effective electron-electron repulsion of Cr3+ 3d electrons and decreasing the energy separation between the 4T2 excited state and the 4A2 ground state， while the low phonon energy and weak electron-phonon coupling of the sulfide lattice suppress nonradiative losses. This synergistic mechanism overcomes the long-standing challenge in Cr3+-doped SWIR phosphors， where long-wavelength emission， high efficiency， and excellent thermal stability have traditionally been difficult to achieve simultaneously.关键词：short-wave infrared luminescence;ternary rare-earth sulfides;Cr3+;phosphor-converted LEDs387|268|0更新时间：2026-09-30
Research Highlight
- 摘要：Information security and anti-counterfeiting technologies are essential for financial systems， commodity circulation， and public safety. However， traditional anti-counterfeiting strategies based on single and static optical features are increasingly insufficient against rapidly evolving counterfeiting techniques. Lanthanide metal-organic frameworks （Ln-MOFs）， featuring high brightness， long decay lifetimes， narrow-band emissions， and tunable responses to light， temperature， pH， and other stimuli， have emerged as ideal candidates for constructing multimodal optical security systems. This review summarizes the luminescence mechanisms， structural design principles， and stimulus-responsive regulation strategies of Ln-MOF， and highlights their representative applications in multi-level encrypted labels， dynamic QR codes， and composite anti-counterfeiting platforms. Key challenges related to stability， intelligence， and tapping the potential of pore channels are discussed， and future development directions of Ln-MOFs in advanced anti-counterfeiting and information storage technologies are outlined.关键词：lanthanide metal-organic frameworks;stimulus response;luminescence mechanism;multimodal anti-counterfeiting521|405|0更新时间：2026-09-30
- 摘要：Herein， we designed and synthesized a multifunctional nanocomposite （UCNPs@FMn/ICG， denoted as UMI） that integrates upconversion luminescence imaging with trimodal synergistic therapy. This nanocomposite enables switching between upconversion luminescence imaging and a combined photodynamic （PDT）， photothermal （PTT）， and chemodynamic therapy （CDT） response simply by altering the excitation wavelength. Under 980 nm irradiation， UMI exhibited intense upconversion emission， demonstrating its potential for applications in near-infrared （NIR）-mediated optical imaging. When excited at 808 nm， UMI generated reactive oxygen species for PDT and produced substantial heat for PTT， highlighting highly efficient dual photodynamic and photothermal functions. The PDT performance of UMI was evaluated by the photocatalytic degradation experiment of 1，3-diphenylisobenzofuran （DPBF）. At a concentration of 400 μg·mL-1， UMI rapidly degraded 83.9 % of DPBF within 30 s under 808 nm irradiation （91.0 mW·cm-2）. Simultaneously， it reached a temperature of 43.1 ℃ within 10 min under 560 mW·cm-2 irradiation， achieving a photothermal conversion efficiency of around 43.3 %. Thus， by synergizing pH-activated enzymatic catalysis and NIR-triggered phototherapeutic effects， UMI emerges as a versatile theranostic nanocomposite， paving the way for precise and efficient multimodal treatment guided by upconversion luminescence imaging.关键词：lanthanide;upconversion luminescent nanoparticles;near-infrared excitation;phototherapy253|122|0更新时间：2026-09-30
- 摘要：Mechanoluminescent （ML） materials， by virtue of their unique capability for mechanical-to-optical energy conversion， hold great promise for a wide range of applications， and the development of multicolor properties can further broaden their application scope. Energy transfer is a core mechanism for tuning the properties of luminescent materials. However， ML materials that utilize energy transfer to adjust chromaticity are extremely rare. In this study， a series of Na2CaP2O7∶Tb3+，Sm3+ phosphors are prepared via a high-temperature solid-state method. An energy transfer channel from Tb3+ to Sm3+ is successfully established， enabling the tuning of ML colors. Based on this， we design an application for dynamic information encryption and anti-counterfeiting by utilizing the variations in ML color and intensity to record the trajectory and magnitude of the applied mechanical force. This research not only provides an effective strategy for designing novel multicolor ML materials but also broadens their application scenarios in the field of advanced information security.关键词：Na2CaP2O7∶Tb3+，Sm3+;energy transfer;mechanoluminescence;dynamic anti-counterfeiting258|95|0更新时间：2026-09-30
- 摘要：Ultraviolet C light， spanning the wavelength range of 200-280 nm， holds significant application value in areas such as sterilization and anti-counterfeiting. Different from conventional mercury lamp and deep ultraviolet light-emitting diodes， we prepared a series of Sr3-xB2O6∶xPr3+ （x=0.005-0.05） phosphors via a high-temperature solid-state method， and systematically investigated the phase structures， luminescence properties， and upconversion performance of these phosphors， aiming to develop an upconversion ultraviolet light source excited by blue light-emitting diodes. Under a 450 nm blue laser excitation， the samples exhibited upconversion ultraviolet emission， with the emission peak located in the 250-370 nm ultraviolet band， attributed to the 4f15d1→4f2 transition of Pr3+ ions. The power dependence was further explored， and the results indicated that the ultraviolet emission originated from a two-photon upconversion process. The upconversion ultraviolet emission intensity showed no significant attenuation under continuous 450 nm laser irradiation for 2 h. Moreover， when the temperature was elevated to 436 K， the upconversion ultraviolet emission intensity remained 75% of that at room temperature， demonstrating the excellent stability of the investigated system. Furthermore， an upconversion ultraviolet emitting device was fabricated by encapsulating the phosphor with a 450 nm light-emitting diode chip， and it was successfully applied for high signal-to-noise ratio marking in various complex scenarios. This study provides an important reference for the development of novel deep ultraviolet light sources and their applications in fields such as anti-counterfeiting marking.关键词：Pr3+;UVC photons;upconversion257|83|0更新时间：2026-09-30
- 摘要：Circularly polarized luminescent materials have garnered significant attention due to their broad application prospects in next-generation display technologies， information encryption， chiral sensing， and recognition. However， conventional luminescent materials often suffer from reduced emission efficiency in the solid or aggregated state due to aggregation-caused quenching， which limits their practical applications. The discovery of aggregation-induced emission offers a new strategy to overcome this challenge. The tetraphenylethene motif， with its ease of structural modification， high solid-state emission efficiency， and controllable aggregation behavior， serves as an ideal platform for constructing high-performance circularly polarized luminescent materials. This article systematically reviews recent research progress on tetraphenylethene-based circularly polarized luminescent materials， focusing on chiral assembly strategies， mechanisms of chirality amplification in the aggregated state， performance regulation methods， and explorations of practical applications.关键词：tetraphenylethylene;circularly polarized luminescence;aggregation-induced luminescence;supramolecular chirality;supramolecular assembly285|84|0更新时间：2026-09-30
- 摘要：Introducing chiral optical properties into organic afterglow materials capable of persistent luminescence after the removal of the excitation source to construct luminescent materials featuring both long-lived emission and circularly polarized luminescence enables dual-dimensional optical regulation in both time and polarization， which has become an important research direction in organic luminescence and functional optical materials. Such materials exhibit unique advantages in three-dimensional displays， information encryption， anti-counterfeiting， and chiral recognition. In this review， we systematically summarize the excited-state processes of organic afterglow and circularly polarized luminescence and their coupling mechanisms， from the perspectives of emission mechanisms to material design strategies for constructing circularly polarized organic afterglow materials. We further review recent advances in related material systems designed by invoking intrinsic molecular chirality， chirality transfer， and chiral self-assembly， together with their circularly polarized afterglow properties and applications. Finally， the current challenges in this field are discussed， and its future development trends are prospected.关键词：organic afterglow;Room-temperature phosphorescence;chirality;circularly polarized luminescence409|150|0更新时间：2026-09-30
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Chiral BODIPY Circularly Polarized Luminescence Materials: Molecular Design and Applications 增强出版 AI导读
摘要：Circularly polarized luminescence （CPL） materials encode chiral optical information， showing promise for optoelectronics， biomedicine， and anti-counterfeiting. Achieving high-performance CPL requires concurrent optimization of the dissymmetry factor （
Invited Paper
- 摘要：Nanolasers based on the surface plasmon amplification by stimulated emission of radiation （Spaser） structure are an important way to achieve breakthrough beyond the diffraction limit and to realize on-chip coherent light sources. In this paper， a hybrid waveguide-surface plasmon polariton structure based on Glass/Ag/SiO₂/colloidal quantum dots （CQDs） was designed and fabricated. The amplification of spontaneous emission （ASE） performance of green light ZnCdSe/ZnS core-shell quantum dots in this structure was studied. This structure supports a highly localized hybrid waveguide-surface plasmon polariton mode， and the optical field is strongly localized in the ultrathin （~15 nm） SiO₂ spacer layer. Influenced by the Purcell effect， compared with pure CQD films， the fluorescence lifetime of CQDs in the Spaser structure is significantly shortened and presents a double-exponential decay characteristic. Under optical pumping conditions， this device achieved a lower threshold of TM-polarized ASE， with a threshold of 86 µJ∙cm-2 and a linear polarization degree of 0.91； the divergence angle before and after the threshold decreased significantly. This study reveals the regulatory rules of the hybrid waveguide-surface plasmon polariton mode on the ASE characteristics of CQDs， providing experimental basis and physical reference for the development of on-chip integrated nanometer light sources based on solution-based fabrication and polarization-controllable.关键词：colloidal quantum dots;surface plasmon amplification by stimulated emission of radiation（Spaser）;Surface plasmon polariton （SPP）;Amplified spontaneous emission （ASE）475|154|0更新时间：2026-09-30
- 摘要：Tetracycline （TC）， as a widely used broad-spectrum antibiotic， tends to persist in environmental water bodies， posing potential ecological and health risks. Therefore， it is of great significance to develop a rapid， sensitive detection method suitable for complex systems. In this paper， L-cysteine was used as the sole precursor to prepare nitrogen and sulfur co-doped carbon dots （Cys-CDs） via a one-step hydrothermal method， and these Cys-CDs were utilized for the fluorescence detection of TC. The results indicated that the obtained Cys-CDs exhibited stable emission at 475 nm and possessed good excitation independence characteristics. In TC detection， the fluorescence of Cys-CDs was significantly quenched by TC， and the fluorescence quenching efficiency showed a good linear relationship with TC concentration within the range of 0-100 μmol/L， with a detection limit of 0.29 μmol/L. The quenching mechanism of TC on Cys-CDs was analyzed through UV-visible absorption spectroscopy and fluorescence lifetime analysis. The results demonstrate that Cys-CDs can serve as a simple， sensitive， and practically applicable fluorescent probe for the rapid detection of tetracycline in environmental water samples.关键词：Amino acid;carbon dots;fluorescent probe;tetracycline296|162|0更新时间：2026-09-30
- 摘要：Near-infrared phosphor-converted light-emitting diodes （NIR pc-LEDs）， as a novel compact light source， exhibit promising application prospects in night vision lighting， bioimaging， non-destructive testing， and other fields. The development of NIR phosphors with efficient， ultra-broadband emission and high thermal stability remains an urgent challenge. In this study， a series of Cr3+-activated Ga4GeO8 phosphors was successfully synthesized via a high-temperature solid-state method， and its crystal structure and NIR luminescence properties were systematically analyzed. Under 420 nm excitation， Ga2Al2GeO8∶0.09Cr3+ （GAGO∶0.09Cr3+） exhibits an ultra-broadband near-infrared emission covering 650-1 400 nm， with a peak at 897 nm， a full width at half maximum （FWHM） of 285 nm， and an internal quantum efficiency of 35.4%. Combined structural analysis and spectral characterization confirm that the ultra-broadband NIR emission primarily originates from multiple luminescence centers formed by Cr3+ ions occupying different octahedral sites within the host lattice. Furthermore， by introducing an Al3+-Ga3+ substitution strategy， the resulting GAGO∶0.09Cr3+ exhibits a 1.35-fold enhancement in the integrated PL intensity， an improved quantum efficiency of 43.6%， and an FWHM of 268 nm. Temperature-dependent spectral results further validate the luminescence mechanism involving multi-site occupancy of Cr3+ ions in the host lattice. Finally， a NIR LED device was fabricated by encapsulating GAGO∶0.09Cr3+ phosphor with a commercial blue LED chip， demonstrating its potential application in molecular identification of organic compound and quantitative analysis， as well as night vision technology.关键词：multi luminescence centers;broadband NIR;NIR pc-LED351|99|0更新时间：2026-09-30
Editor's Choice
- 摘要：In this work， we report the finely controlled synthesis of ZnS nanocrystals （NCs） by a microchannel reactor （MCR）. Surface functionalization with oleic acid （OA） and cross-linkable lipoic acid （LA） ligands was employed to significantly enhance interfacial compatibility and adhesion between ZnS NCs and acrylic resin matrices. Based on this， the composite microlens arrays with ZnS@OA∶LA are subsequently fabricated to augment light extraction efficiency （LEE） in quantum dot light-emitting diodes （QLEDs）. The results show that MCR-ZnS NCs exhibit uniform particle size， eliminating the inherent physical inhomogeneity associated with conventional one-pot （OP） synthesis systems. Notably， the MCR enables large-scale controllable production and thus substantially improves production capacity. Moreover， the ZnS@OA∶LA composite resin film with a doping concentration of mass fraction 30% achieves a remarkable refractive index enhancement from 1.47 to 1.67 at 628 nm， while retaining a high visible light transmittance of over 95% and a pencil hardness of 2H. Ultimately， after integrating the ZnS-based microlens array onto the top-emitting red QLED， the maximum external quantum efficiency （EQE） of the device is increased from 9.27% to 18.12%， achieving an approximate 2-fold EQE improvement and a significant elevation in device LEE.关键词：microchannel synthesis;ZnS;cross-linkable;quantum dot light-emitting diode （QLED）;light extraction460|194|0更新时间：2026-09-30
- 摘要：To achieve multi-mode mechanoluminescence responses in a single matrix， CaYAl3O7 phosphors co-doped with Eu2+， Eu3+， and Tb3+ were synthesized using a high-temperature solid-state method. Their luminescent properties were investigated using photoluminescence and emission spectroscopy， X-ray excitation-emission spectroscopy， mechanoluminescence spectroscopy， and thermoluminescence spectroscopy. The experimental results show that this material enables the 5D0-7F4 transition of strongly red-emitting Eu3+ and the 5D4-7F5 transition of green-emitting Tb3+ （both of which are f-f transitions） without the need for pre-excitation. Under different ion doping concentrations， multi-color emission of red， green， orange， and white light was achieved. Under illumination， the energy stored in defects introduced into the material significantly enhances the Eu2+ luminescence intensity， accompanied by a distinct blue stress afterglow phenomenon. Under different loading conditions， the luminescence intensities of Eu2+ and Eu3+ （Tb3+） exhibit different sensitivities to external loading. By adjusting the ratio of their luminescence intensities， stress-induced color-changing functionality can be achieved， enabling precise control over the emission color. Comparative studies reveal that the possible mechanism under illuminated and non-illuminated conditions is a synergistic effect combining trap-controlled piezoelectric mechanoluminescence and triboelectric mechanoluminescence without pre-excitation. This ultimately enables the integration of multiple mechanoluminescence modes within a single matrix， thereby reducing the structural complexity brought about by multi-component composite systems. This study aims to investigate the stress-induced luminescence mechanisms under dual light-load excitation conditions， providing data support for stress sensing under multi-stimulus conditions.关键词：mechanoluminescence;rare earth luminescence;Multimodal;CaYAl3O7;tunable color;luminescent properties225|103|0更新时间：2026-09-30
- 摘要：Amorphous gallium oxide （Ga2O3） thin films， including unintentionally doped samples and those modified under H2/N2 atmospheres， were prepared at room temperature by inductively coupled plasma （ICP）‑assisted magnetron sputtering. Their optical properties and defect-related luminescence behaviors were investigated using X-ray diffraction， spectroscopic ellipsometry， absorption spectrum， photoluminescence， and time-resolved photoluminescence. The results show that all films remain amorphous and exhibit typical broadband defect-related emission. ICP assistance modulates the absorption-edge tailing and stabilizes the original defect-related luminescence channels. H2 regulation further modulates the original blue-green broadband emission channels， leading to higher thermal stability and longer apparent decay lifetime. In contrast， N2 regulation significantly increases the Urbach energy， introduces an additional low-energy emission component at approximately 1.97 eV and increases the complexity of defect-related energy-level distributions. These results indicate that ICP assistance and H2/N2 atmosphere regulation can modulate the luminescence behavior of amorphous Ga2O3 thin films by affecting band-tail states and defect-related recombination channels， providing experimental support for tailoring their defect-related optical properties.关键词：Amorphous Gallium Oxide;defect emission;H2/N2 Regulation;photoluminescence;Inductively Coupled Plasma Assistance549|107|0更新时间：2026-09-30
- 摘要：This study proposes a hydrolysis-neutralization route for the synthesis of lithium molybdate polycrystalline powder. The process was successfully implemented at the Institute of Physical and Chemical Engineering of Nuclear Industry， and high-quality lithium molybdate crystal was subsequently grown by the Bridgman method. No obvious macroscopic defects， such as impurities， cracks， or bubbles， were observed inside the crystal. Optical measurements at the bottom （B）， middle （M）， and top （T） sections of the crystal showed transmittance values of approximately 74.9%-78.7%， 83.8%-88.7%， and 80.1%-84.1% respectively， within the wavelength range of 500-700 nm. The optical band gaps （Eg）， determined from Tauc plots， were 4.23 eV， 4.24 eV， and 4.24 eV， respectively. The luminescence of the lithium molybdate crystal originates from the intrinsic emission of the tetrahedral ［MoO4］2- group. Under 300 nm excitation， the crystal exhibits broad emission peak centered around 500 nm.关键词：Li2MoO4 crystal;Hydrolysis-neutralization;Powder preparation;crystal growth;spectral analysis373|164|0更新时间：2026-09-30
Synthesis and Properties of Materials
- 摘要：Visible narrow-linewidth lasers feature extremely high spectral purity， excellent coherence， and good output power stability. With these core advantages， they serve as key light sources in multiple cutting-edge fields such as marine exploration， biomedicine， laser spectroscopy， aerospace satellites， and microwave field strength measurement. As related application research continues to deepen， higher requirements have been placed on the comprehensive performance parameters of lasers. Visible narrow-linewidth lasers are steadily advancing in directions such as linewidth compression， power stability， and wavelength tuning. Based on the principle of the interaction between spontaneous and stimulated emission of lasers， optimizing the laser resonator configuration is a key approach to achieving precise linewidth control. Currently， various resonator configurations such as short cavity， ring cavity， composite cavity， and external cavity feedback have been gradually developed. This article systematically reviews the research progress of visible narrow-linewidth lasers， covering linewidth compression mechanisms， resonator structures， and nonlinear frequency conversion techniques. It systematically summarizes the performance improvements and technical characteristics of solid-state， fiber， and semiconductor lasers， and explores potential research directions in this field， providing a reference for the further development of high-performance visible narrow-linewidth laser sources.关键词：narrow linewidth;visible laser band;nonlinear frequency conversion;coherence405|175|0更新时间：2026-09-30
Device Fabrication and Physics
- 摘要：Carbon monoxide （CO）， a toxic gas generated during industrial operations， has recently been recognized as a critical signaling molecule in pathophysiological processes such as bacterial infection， as well as in abiotic stress responses in plants. To enable dynamic tracking of CO in complex biological matrices， we report a new red-emitting fluorescent probe （Rh-CO） engineered by tethering an allyl formate recognition unit to a rhodamine scaffold. In the presence of PdCl₂ and CO， the probe undergoes a Tsuji-Trost-mediated cleavage of the allyl formate moiety and displays a turn-on fluorescence enhancement at 635 nm that reaches a response plateau within 26 min. Rh-CO exhibits favorable properties including red emission， excellent selectivity for CO， a detection limit of 1.94 μmol/L， and low cytotoxicity， making it well-suited for in vivo imaging applications. The utility of Rh-CO was further demonstrated by visualizing endogenous CO generation in a lipopolysaccharide-induced murine pneumonia model， evaluating the anti-inflammatory action of CO， and monitoring CO fluctuations in plants under Cd²⁺ stress. These findings collectively introduce a versatile molecular tool for investigating CO functions across animal and plant systems.关键词：red-emitting fluorescent probe;carbon monoxide;fluorescence imaging;bacterial pneumonia;plant abiotic stress326|127|0更新时间：2026-09-30
Luminescence Applications and Interdisciplinary Fields
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