Liu Yujin, Ji Zhong, Cen Guobiao, Sun Hengchao, Wang Haibao, Zhao Chuanxi, Wang Zhong Lin, Mai Wenjie
Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, China.
Guangzhou Institute of Technology, Xidian University, Guangzhou, Guangdong, 510555, China.
Light Sci Appl. 2023 Feb 14;12(1):43. doi: 10.1038/s41377-023-01072-y.
There are two primary types of photoreceptor cells in the human eye: cone cells and rod cells that enable color vision and night vision, respectively. Herein, inspired by the function of human visual cells, we develop a high-resolution perovskite-based color camera using a set of narrowband red, green, blue, and broadband white perovskite photodetectors as imaging sensors. The narrowband red, green, and blue perovskite photodetectors with color perceptions mimic long-, medium-, and short-wavelength cones cells to achieve color imaging ability. Also, the broadband white perovskite photodetector with better detectivity mimics rod cells to improve weak-light imaging ability. Our perovskite-based camera, combined with predesigned pattern illumination and image reconstruction technology, is demonstrated with high-resolution color images (up to 256 × 256 pixels) in diffuse mode. This is far beyond previously reported advanced perovskite array image sensors that only work in monochrome transmission mode. This work shows a new approach to bio-inspired cameras and their great potential to strongly mimic the ability of the natural eye.
视锥细胞和视杆细胞，分别实现彩色视觉和夜视功能。在此，受人类视觉细胞功能的启发，我们开发了一种基于钙钛矿的高分辨率彩色相机，使用一组窄带红、绿、蓝以及宽带白色钙钛矿光电探测器作为成像传感器。具有颜色感知能力的窄带红、绿、蓝钙钛矿光电探测器模仿长、中、短波长视锥细胞，以实现彩色成像能力。此外，具有更好探测能力的宽带白色钙钛矿光电探测器模仿视杆细胞，以提高弱光成像能力。我们基于钙钛矿相机结合预先设计的图案照明和图像重建技术，在漫射模式下展示了高分辨率彩色图像（高达256×256像素）。这远远超越了此前报道的仅在单色传输模式下工作的先进钙钛矿阵列图像传感器。这项工作展示了一种受生物启发的相机新方法及其强大潜力，可有力地模仿自然眼睛的能力。
