Template Stripping Method for High-performance Perovskite Single-crystalline Thin-film Photodetectors

被引：0

作者：

Shan D. ^{[1
]}

Zhang H. ^{[1
]}

Zhang Q. ^{[1
]}

Zhagn H. ^{[1
]}

Ding R. ^{[1
]}

机构：

[1] State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2024年 / 45卷 / 02期

基金：

中国国家自然科学基金;

关键词：

hybrid perovskite semiconductors; perovskite single-crystalline thin-films; photodetectors; template stripping method;

D O I：

10.37188/CJL.20230271

中图分类号：

学科分类号：

摘要：

Hybrid perovskite semiconductors have attracted enormous interest in the field of optoelectronic devices for creating high-performance solar cells，light-emitting diodes，and photodetectors owing to their tunable narrow band gap，high optical absorption，high charge-carrier mobility，and low cost，etc. Among them，perovskite single-crystalline thin-films show greater promise as an ideal matrix for optoelectronic applications because of their absence of grain boundaries，lower impurity，and lower defect densities. The space-confined method was usually used for the growth of perovskite single-crystalline thin-films，where a polymer hole-transport layer was employed to accelerate the ion diffusion. However，this solution-processed method will inevitably bring in the interfacial defects and induce poor charge-carrier injection between the perovskite single-crystalline thin-film and hole-transport layer. Herein，we introduced the template stripping method to solve this problem that enables direct thermal-deposition onto two sides of the perovskite single-crystalline thin-film. A novel perovskite single-crystalline thin-film photodetector can be constructed by a device structure of Cu/BCP/C60/MAPbBr3/MoO3/Ag. Then，an ultrasensitive and fast perovskite single-crystalline thin-film photodetector can be realized with an on-off ratio of 3. 1 × 103，a responsivity up to 7. 15 A/W，a detectivity of 5. 39 × 1012 Jones，and an external quantum efficiency of 1794%，due to the optimal device structure and improved charge-carrier transport. These results indicate that the template stripping method provides a feasible approach to further improve the performance of perovskite single-crystal photodetectors. © 2024 Editorial Office of Chinese Optics. All rights reserved.

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页码：195 / 203

页数：8

共 31 条

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