journal article·2025-06-10

A Diamond-Based Neuromorphic Retina Perception System with Wide Spectrum Photoresponse and Wavelength Sensitivity

Zitong Liu, Bing Yang, Peitao Liu, Longhai Shen, Ouxiang Zhou, Hanning Xu, Xiaokun Guo, Xinglai Zhang, Junchao Wang, Lijie Deng, Siyu Feng, Lizhi Feng, Baodan Liu, Dongming Sun, Xing-Qiu Chen, Xin Jiang, Bing Leng

ACS Nano· Volume 19· Issue 22
Publisher page

Abstract

Diamond, an important electronic and optoelectronic material, exhibits excellent performance in deep ultraviolet photodetection. However, its lack of visible light response and nonvolatile photocurrent hinders its application in neuromorphic sensors that mimic the human eye. In this work, we report a diamond-based neuromorphic retina perception system (NRPS) that demonstrates broad-spectrum photoresponse beyond the human visual range, nonvolatile photocurrent, and wavelength sensitivity. This outcome is achieved by introducing a large number of defects and doping states into the diamond film through heteroepitaxial growth on the SiO 2 substrate and Si doping. By adjusting the input light and electrical stimulation, human eye’s pupil and image memory behavior are successfully simulated. More interestingly, the diamond NRPS exhibits a significant difference in the decay characteristic of photocurrent under different wavelengths of illumination. Based on this characteristic, the NRPS achieves recognition of unknown colors and trajectory tracking of dynamic light dots. Furthermore, the image recognition accuracy is improved from 67.5% to 81.7% by filtering the visible light information and extracting useful ultraviolet light information with the device. This study offers an effective strategy to develop a diamond-based neuromorphic sensor.
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Research context

OpenAlex topics: Advanced Memory and Neural Computing · Neuroscience and Neural Engineering · CCD and CMOS Imaging Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Science, Shenyang Ligong University, no. 6 Nanping Central Road, Shenyang 110159, China

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, no. 72 Wenhua Road, Shenyang 110016, China

School of Materials Science and Engineering, University of Science and Technology of China, no. 72 Wenhua Road, Shenyang 110016, China

School of Material Science and Engineering, Northeastern University, no. 11 Wenhua Road, Shenyang 110819, China

Foshan Graduate School of Northeastern University, no. 2, Zhihui Road, Foshan 528300, China

Department of Plastic Surgery, The First Affiliated Hospital of China Medical University, no. 155 North Nanjing Street, Shenyang 110001, China

Funding

Basic and Applied Basic Research Foundation of Guangdong Province · Northeastern University · Youth Innovation Promotion Association of the Chinese Academy of Sciences · Natural Science Foundation of Liaoning Province · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Scientific Research Project of Foshan Talents

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