Room-temperature-processed transparent hemispherical optoelectronic array for electronic eyes

作者：Gao, Zhan; Mei, Liang; Zhou, Jingkun; Fu, Yang; Zhai, Li; Li, Zhiyuan; Yang, Ruijie; Li, Dengfeng; Zhang, Qiang; He, Jiahui; Li, Jian; Huang, Xingcan; Li, Hu; Liu, Yiming; Yao, Kuanming; Gao, Yuyu; Zheng, Long; Chen, Ye; Lei, Dangyuan; Zhang, Hua^*; Zeng, Zhiyuan^*; Yu, Xinge^*

来源：Materials Today, 2023, 69: 31-40.

DOI：10.1016/j.mattod.2023.08.004

• Electronic eye
• Room-temperature processing
• Curved electronics
• MoS2
• Transparent photodetector array

Bio-inspired electronic eyes mimicking the geometry and function of natural light-sensing organs are highly attractive in next-generation miniaturized imaging systems. The processing of electronic eyes usually adopts complex and equipment-intensive techniques, involving vacuum-based materials growth, doping, deposition and patterning. Here, we report an electronic eye system with a fully transparent artificial retina by a simple solution-based method at room-temperature. The artificial retina contains a flexible 16 x 16 photodetector array, which composes of a ZnO nanoparticle-MoS2 nanosheet composite film as the light sensing unit and the patterned silver nanowires as conductive paths within 1 cm2. It shows a reliable ultra-violet response and high transparence across the visible and near-infrared range, and hence allows the artificial retina to perceive light from all directions without weakening the photo-response. Demonstrations of two kinds of electronic eye prototypes (concave and convex hemispheres) in a single device configuration show the possibility for double sided imaging. This work provides a simple, rapid and high-throughput processing route for bioinspired electronic eye that could be used for integration of various functional materials with different properties, which opens a new avenue for the multifunctional electronic eye devices.