Temperature-induced gradient tin–lead-mixed halide perovskite photodetector温度诱导的梯度锡-铅基混合卤素钙钛矿光电探测器

被引：0
作者：
Liansong Liu
Fengren Cao
Liukang Bian
Meng Wang
Haoxuan Sun
Liang Li
机构：
[1] Soochow University,School of Physical Science and Technology, Center for Energy Conversion Materials & Physics (CECMP), Jiangsu Key Laboratory of Thin Films
来源：
Science China Materials | 2023年 / 66卷
关键词：
tin–lead; halide perovskite; gradient; photodetector;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Inorganic tin (Sn)–lead (Pb)-mixed halide perovskites have attracted more interest than organic–inorganic hybrid lead halide perovskites due to their broad response wavelength range and high thermal stability. To improve the performance of Sn–Pb-mixed halide perovskite-based devices, it is essential to further manipulate carrier separation and recombination. Herein, a gradient inorganic CsPb0.7Sn0.3I3-based self-powered photodetector is presented. By adjusting the annealing temperature to optimize the gradient distribution degree of Sn and Pb in CsPb0.7Sn0.3I3 perovskite films, the optimal gradient perovskite device exhibits a high responsivity (0.18 A W−1), large specific detectivity (2.5 × 1012 Jones), and fast response speed (58.9/42 µs). The performance is comparable to the majority of Sn–Pb-mixed or pure Sn perovskite-based photodetectors reported previously. Correspondingly, the improved performance could be mainly attributed to the gradient distribution-induced band bending, which promotes the separation and transport of photogenerated carriers.
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页码：4697 / 4703
页数：6
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  • [1] Mei L(2022)Hybrid halide perovskite-based near-infrared photodetectors and imaging arrays Adv Opt Mater 10 2102656-9607
  • [2] Huang R(2020)High-speed III–V nanowire photodetector monolithically integrated on Si Nat Commun 11 4565-638
  • [3] Shen C(2020)Bionic detectors based on low-bandgap inorganic perovskite for selective NIR-I photon detection and imaging Adv Mater 32 1905362-4556
  • [4] Mauthe S(2023)Highly efficient and stable self-powered mixed tin-lead perovskite photodetector used in remote wearable health monitoring technology Adv Sci 10 2205879-494
  • [5] Baumgartner Y(2021)Flexible and robust 3D a-SiGe radial junction near-infrared photodetectors for rapid sphygmic signal monitoring Adv Funct Mater 32 2107040-9038
  • [6] Sousa M(2018)Highly sensitive, visible blind, wearable, and omnidirectional near-infrared photodetectors ACS Nano 12 9596-4848
  • [7] Cao F(2017)A review on organic–inorganic halide perovskite photodetectors: Device engineering and fundamental physics Adv Mater 29 1605242-3772
  • [8] Chen J(2022)Recent advances in Pb-Sn mixed perovskite solar cells J Energy Chem 73 615-17840
  • [9] Yu D(2016)On the application of the tolerance factor to inorganic and hybrid halide perovskites: A revised system Chem Sci 7 4548-1605
  • [10] Liu F(2014)Lead-free solid-state organic–inorganic halide perovskite solar cells Nat Photon 8 489-880
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