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1.山西大学 激光光谱研究所, 光量子技术与器件全国重点实验室, 山西 太原 030006
2.山西大学 极端光学协同创新中心, 山西 太原 030006
[ "刘 晶 晶 (1997-),女,山 西 吕 梁 人,硕士研究生,2021 年于太原师范学院获得学士学位,主要从事近红外光电探测与成像的研究。E-mail:202222607035@email.sxu.edu.cn" ]
[ "杨志春(1988-),男,山西朔州人,博士,副教授,硕士生导师,2021年于华中科技大学获得博士学位,主要从事光电转换材料与器件的研究。" ]
[ "秦成兵(1986-),男,安徽六安人,博士,教授,博士生导师,2013年于中国科学技术大学获得博士学位,主要从事红外探测与成像的研究。" ]
[ "肖连团(1966-),男,山西大同人,博士,教授,博士生导师,2001年于山西大学获得博士学位,主要从事激光光谱学和光子探测与成像的研究。" ]
收稿:2025-02-07,
修回:2025-02-20,
纸质出版:2025-06-25
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刘晶晶,杨志春,包昊天等.基于锡铅混合钙钛矿的超快自驱动近红外光电探测器与成像阵列[J].发光学报,2025,46(06):1037-1047.
LIU Jingjing,YANG Zhichun,BAO Haotian,et al.Ultrafast Self-powered Near-infrared Photodetectors and Imaging Array Based on Tin-lead Mixed Perovskites[J].Chinese Journal of Luminescence,2025,46(06):1037-1047.
刘晶晶,杨志春,包昊天等.基于锡铅混合钙钛矿的超快自驱动近红外光电探测器与成像阵列[J].发光学报,2025,46(06):1037-1047. DOI: 10.37188/CJL.20250027. CSTR: 32170.14.CJL.20250027.
LIU Jingjing,YANG Zhichun,BAO Haotian,et al.Ultrafast Self-powered Near-infrared Photodetectors and Imaging Array Based on Tin-lead Mixed Perovskites[J].Chinese Journal of Luminescence,2025,46(06):1037-1047. DOI: 10.37188/CJL.20250027. CSTR: 32170.14.CJL.20250027.
锡铅(Sn-Pb)混合钙钛矿因其卓越的光电特性,在近红外光电探测器领域得以快速发展。然而,由于其固有的快速结晶特性和Sn
2+
易氧化的问题,实现高性能锡铅混合光电探测器仍面临巨大挑战。为了解决这一问题,该研究引入了多功能分子2,3-二氟苯胺(DBM),以调控Sn-Pb混合钙钛矿的结晶过程并且延缓Sn
2+
氧化,从而有效提升薄膜质量。与原始薄膜相比,经DBM分子调控的Sn-Pb混合钙钛矿薄膜具有高度均匀的形貌、显著降低的粗糙度和缺陷密度。基于这种调控薄膜制备的自驱动型近红外光电探测器,光谱响应范围为300~1 100 nm, 最高响应度为0.51 A·W
-1
,近红外区域(780~1 100 nm)的比探测率高达2.46 × 10
11
Jones,线性动态范围超过152 dB,响应时间为123/464 ns。在此基础上制备的5 × 5光电探测器阵列在近红外区域(最高可达980 nm)展现了卓越的成像能力。该工作不仅促进了Sn-Pb混合钙钛矿在近红外探测与成像领域的快速发展,还为其商业化进程奠定了基础。
Tin-lead (Sn-Pb) mixed perovskites are extensively investigated in near-infrared (NIR) photodetectors (PDs) owing to their excellent photoelectric performance. However, achieving high-performance Sn-Pb mixed PDs remains challenging, primarily because of the rapid crystallization and the susceptibility of Sn
2+
to oxidation. To address these issues, this study introduces the multifunctional molecules 2,3-difluorobenzenamine (DBM) to modulate the crystallization of Sn-Pb mixed perovskites and retard the oxidation of Sn
2+
, thereby significantly enhancing film quality. Compared with the pristine film, Sn-Pb mixed perovskite films modulated by DBM molecules exhibit a highly homogeneous morphology, reduced roughness and defect density. The self-powered NIR PDs fabricated with the improved films have a spectral response range from 300 nm to 1 100 nm, a peak responsivity of 0.51 A·W
-1
, a specific detectivity as high as 2.4
6 × 10
11
Jones within the NIR region (780 nm to 1 100 nm), a linear dynamic range exceeding 152 dB, and ultrafast rise/fall time of 123/464 ns. Thanks to the outstanding performance of PDs, the fabricated 5 × 5 PDs array demonstrates superior imaging ability in the NIR region up to 980 nm. This work advances the development of Sn-Pb mixed perovskites for NIR detection and paves the way for their commercialization.
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