Self-powered transparent photodetector for subretinal visual functions of wide-field-of-view and broadband perception  

作　　者：Priyanka Bhatnagar Malkeshkumar Patel Kibum Lee Joondong Kim 

机构地区：[1]Photoelectric and Energy Device Application Lab(PEDAL),Multidisciplinary Core Institute for Future Energies(MCIFE),Incheon National University,Incheon,Republic of Korea [2]Department of Electrical Engineering,Incheon National University,Incheon,Republic of Korea [3]Solarlight Ltd.,Incheon,Republic of Korea

出　　处：《InfoMat》2023年第6期89-101,共13页信息材料（英文）

基　　金：The authors acknowledge the financial support of the Basic Science Research Program through the National Research Foundation(NRF-2020R1A2C1009480);the Ministry of Education of Korea and the Brain Pool Program funded by the Ministry of Science and ICT(NRF2022H1D3A2A01089675,NRF2020H1D3A2A02085884 and NRF-2020H1D3A2A02096147);This work was also supported by 2022 fostering project on Regional Characteri-zation Program through the INNOPOLIS funded by Minis-try of Science and ICT(2022-IT-RD-0209).

摘　　要：Natural photoreceptors enable color vision in humans,wherein the eyes detect colors and their corresponding intensities via cone and rod photoreceptors,respectively.Herein,we developed an artificial broadband photoreceptor with light-color intensity detection similar to that of natural photoreceptors.The developed photoreceptor operates in the self-powered mode and is capable of broadband perception(365–940 nm).The designed metal-oxide heterojunction(n-ZnO/p-NiO)photoreceptor with a thin tin sulfide layer embedded in between is capable of perceiving various colors.It exhibits good transparency in the visible range and displays excellent integration with flexible substrates,highlighting its potential for use in flexible electronics.The fabricated structure has an exceptional response time(≈1 ms)and a wide-field-of-view(150?)compared to the human eye's sensing range(50–100 ms and 108?).The transparent photorecep-tor mimics cones and rods to detect a various wavelength-dependent signals and explicitly differentiate between the intensities of the detected signals,respectively.This is further illustrated by employing the developed photoreceptor to detect colors in real time by generating unique signals corresponding to each color.The demonstration provides the proof of concept for self-biased flexible bioelectronics emulating high-performing visual functions of artificial eyes.

关 键 词：artificial eye BROADBAND retinal visual function transparent photoreceptor wide-field-of-view 

分 类 号：O17[理学—数学]