量子电子学报 ›› 2022, Vol. 39 ›› Issue (5): 752-760.doi: 10.3969/j.issn.1007-5461.2022.05.008

• 激光技术与器件 • 上一篇    下一篇

CH3NH3PbI3 钙钛矿薄膜阵列光电探测器

叶雨琪1,2 , 王时茂1 , 单雪燕1,2 , 赵 啸1,2 , 孟 钢1∗   

  1. ( 1 中国科学院合肥物质科学研究院安徽光学精密机械研究所, 安徽 合肥 230031; 2 中国科学技术大学, 安徽 合肥 230026 )
  • 收稿日期:2021-02-24 修回日期:2021-03-17 出版日期:2022-09-28 发布日期:2022-09-28
  • 通讯作者: E-mail: menggang@aiofm.ac.cn E-mail:E-mail: menggang@aiofm.ac.cn
  • 作者简介:叶雨琪 ( 1996 - ), 女, 湖北武汉人, 研究生, 主要从事半导体光电探测方面的研究。 E-mail: yyq106@mail.ustc.edu.cn
  • 基金资助:
    Supported by CAS Pioneer Hundred Talents Program (中国科学院百人计划), National Natural Science Foundation of China (国家自然 科学基金, 11674324, 62075223), Key Lab of Photovoltaic and Energy Conservation Materials (中国科学院光伏与节能材料重点实验室青年人才课题, PECL2018QN001, PECL2019QN005)

Perovskite photodetector based on CH3NH3PbI3 thin film arrays

YE Yuqi 1,2 , WANG Shimao 1 , SHAN Xueyan 1,2 , ZHAO Xiao 1,2 , MENG Gang 1∗   

  1. ( 1 Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China )
  • Received:2021-02-24 Revised:2021-03-17 Published:2022-09-28 Online:2022-09-28

摘要: 将光电性能优异、可通过低温溶液法制备的卤化物钙钛矿制成阵列型光电探测器, 必将推动其在成像、 光通信等领域中的应用。然而, 卤化物钙钛矿易被常规溶剂 (包括显影液) 溶解, 导致其与光刻工艺不兼容。自 组装单分子疏水层结合光刻工艺的亲水-疏水图形基底制备方法能解决制备过程中极性溶剂与钙钛矿材料不兼 容的问题, 通过简单的旋涂 (极性钙钛矿前驱体溶液仅在亲水图形区域浸润)、低温退火, 可以快速获得钙钛矿阵 列。CH3NH3PbI3 薄膜阵列光电探测器具有良好的光电性能, 530 nm 光辐照下探测率为 4.7 × 10 11 Jones, 响应度 为 0.055 A/W。这项工作为制备图案可控的钙钛矿薄膜阵列光电探测器提供了一种简单而有效的策略。

关键词: 薄膜光学, 卤化物钙钛矿, 光电探测器阵列, 反溶剂法, 亲水- 疏水基底, 光刻

Abstract: Halide perovskite possesses excellent photoelectric properties and can be prepared by lowtemperature solution method. Photodetector arrays made of halide perovskite are highly required in the area of imaging, optical communication and other fields. However, halide perovskite can be easily dissolved by conventional solvents (including developer), which makes it incompatible with photolithography process. Herein, a novel method based on spin coating (the polar perovskite precursor solution only infiltrates the hydrophilic pattern area) and low-temperature annealing has been proposed to prepare perovskite arrays, which can solve the problem of incompatibility between polar solvents and perovskite materials. The fabricated photodetector based on CH3NH3PbI3 thin film arrays exhibits good photoelectric performance, with a high detectivity of 4.7 × 10 11 Jones and the responsivity of 0.055 A/W under 530 nm light irradiation. This work provides a simple and effective strategy to prepare well-defined perovskite photodetector arrays based on thin film array.

Key words: ?lm optics, halide perovskite, photodetector arrays, anti-solvent method, hydrophilichydrophobic substrate, photolithography

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