基于卤化物钙钛矿的图像传感器  

Image Sensor Based on Halide Perovskite

作　　者：张强 董昊田 包春雄[1] ZHANG Qiang;DONG Hao-tian;BAO Chun-xiong(School of Physics,Nanjing University,Nanjing 210093,China)

机构地区：[1]南京大学物理学院,南京210093

出　　处：《物理学进展》2024年第6期278-292,共15页Progress In Physics

基　　金：国家重点研究与发展计划(No.2022YFE0207600)的支持。

摘　　要：图像传感器在生产生活中被广泛使用,例如X射线传感器被广泛应用于医疗影像和安全检查;可见光传感器可以应用于人脸识别和智能设备;近红外传感器在生物识别中不可或缺。目前上述的图像传感器主要使用基于硅、锗或者Ⅲ~Ⅴ族等半导体的光电探测器,这些传感器都存在一些不足之处,比如彩色图像传感器存在光利用率低、会产生摩尔纹等问题。金属卤化物钙钛矿作为一种优异的光电半导体材料,由于具有光吸收系数高、带隙可调、缺陷容忍度高等特点成为制备高性能光电探测器的选择之一。本文综述了基于金属卤化物钙钛矿图像传感器的研究进展,分析了目前其与商用器件的差距并提出一些改进建议。Image sensors have extensive applications in both industrial and everyday settings. For example, X-ray sensors are widely used in medical imaging and security screening;visible light sensors are essential in facial recognition and smart devices;near-infrared sensors are crucial for biometric identification. Currently, these image sensors mainly utilize photodetectors based on silicon, germanium, or Ⅲ-Ⅴ group semiconductors. However, these sensors exhibit certain limitations, such as low light utilization efficiency in color image sensors and the occurrence of moiré patterns. Metal halide perovskites have emerged as a promising material for high-performance photodetectors due to their excellent optoelectronic properties, including high light absorption coefficients, tunable bandgaps, and high defect tolerance. This review summarizes the research advancements in image sensors based on metal halide perovskites,evaluates the current performance gap between these sensors and commercial devices, and suggests potential improvements to bridge this gap.

关 键 词：钙钛矿 探测器 图像传感器 X射线 像素化 

分 类 号：O59[理学—应用物理]