A neuromorphic bionic eye with broadband vision and biocompatibility using TIPS-pentacene-based phototransistor array retina

A neuromorphic bionic eye with broadband vision and biocompatibility using TIPS-pentacene-based phototransistor array retina

Applied Materials Today

10.1016/j.apmt.2023.101885

http://dx.doi.org/10.1016/j.apmt.2023.101885

HAIZHONG ZHANG, Xin Ju, DongZhi Chi, Linrun Feng, Zhe Liu, Kwangsing Yew, Minmin Zhu, Tiaoyang Li, Rongshan Wei, Shaohao Wang, Linfeng Sun, Zhongrui Wang, Yanqing Wu

General Materials Science

20 July 2023

Zhang, H., Ju, X., Chi, D., Feng, L., Liu, Z., Yew, K., Zhu, M., Li, T., Wei, R., Wang, S., Sun, L., Wang, Z., & Wu, Y. (2023). A neuromorphic bionic eye with broadband vision and biocompatibility using TIPS-pentacene-based phototransistor array retina. Applied Materials Today, 33, 101885. https://doi.org/10.1016/j.apmt.2023.101885

Taking inspiration from the human eye's information processing capabilities, the artificial optoelectronic neuronic device (AOEND) offers a promising approach to creating a bionic eye that performs real-time, low-power processing by integrating optical sensors, signal processing, and electronic neurons into a single device. Despite significant advancements, the current AOEND still faces challenges in terms of power consumption, flexibility, bio-compatibility, and, most importantly, achieving photo-sensitivity across the same broadband perceivable wavelength range (380nm to 740nm) as the human eye. In this study, we present a commercially ready, dual-gated thin-film-transistor (TFT)-based AOEND. Our device exhibits exceptional photo-response to specific wavelengths by utilizing an organic TIPS-pentacene material as the channel layer and intentionally tailoring its optical bandgap to approximately 1.6eV. Additionally, the device successfully replicates various photon-triggered synaptic characteristics and performs visual sensing, memory processing, and other functions with low power consumption. Our findings present a viable strategy for the development of future integrated sensing-memory-processing flexible devices for optoelectronic artificial retina perception applications.

Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

This research / project is supported by the National Research Foundation - Competitive Research Programs of Singapore
Grant Reference no. : NRF-CRP24–2020–0002

Beijing Natural Science Foundation (Grant No. Z210006), National Natural Science Foundation of China (Grant No. 92064006), the Hong Kong Research Grant Council-Early Career Scheme (Grant No. 27206321), National Natural Science Foundation of China-Excellent Young Scientists Fund (Hong Kong and Macau) (Grant No. 62122004).

https://oar.a-star.edu.sg/communities-collections/articles/19325

2352-9407

Institute of Materials Research and Engineering