Retina-inspired narrowband perovskite sensor array for panchromatic imaging

Yuchen Hou, Junde Li, Jungjin Yoon, Abbey Marie Knoepfel, Dong Yang, Luyao Zheng, Tao Ye, Swaroop Ghosh, Shashank Priya, Kai Wang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The retina is the essential part of the human visual system that receives light, converts it to neural signal, and transmits to brain for visual recognition. The red, green, and blue (R/G/B) cone retina cells are natural narrowband photodetectors (PDs) sensitive to R/G/B lights. Connecting with these cone cells, a multilayer neuronetwork in the retina provides neuromorphic preprocessing before transmitting to brain. Inspired by this sophistication, we develop the narrowband (NB) imaging sensor combining R/G/B perovskite NB sensor array (mimicking the R/G/B photoreceptors) with a neuromorphic algorithm (mimicking the intermediate neural network) for high-fidelity panchromatic imaging. Compared to commercial sensors, we use perovskite “intrinsic” NB PD to exempt the complex optical filter array. In addition, we use an asymmetric device configuration to collect photocurrent without external bias, enabling a power-free photodetection feature. These results display a promising design for efficient and intelligent panchromatic imaging.

Original languageEnglish (US)
Article numbereade2338
JournalScience Advances
Volume9
Issue number15
DOIs
StatePublished - Apr 2023

All Science Journal Classification (ASJC) codes

  • General

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