A Self-Powered Organic Vision Sensor Array for Photopic Adaptation

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-02-10 DOI:10.1021/acs.nanolett.4c06090

Yannan Dai, Shenglan Hao, Guangdi Feng, Wei Li, Jianquan Liu, Qiuxiang Zhu, Hui Peng, Bobo Tian, Junhao Chu, Chungang Duan

引用次数: 0

Abstract

With the rapid development of artificial intelligence, it is essential to develop a bionic vision sensor that boasts low power consumption, self-adaptability, and broadband sensing for efficient image preprocessing. We employed an organic p-type semiconductor, poly(3-hexylthiophene-2,5-diyl) (P3HT), in conjunction with an Al electrode to engineer a Schottky junction. This design leverages the photogating effect due to the charge trapping by defects at the P3HT/Al interface, endowing this self-powered, two-terminal device with photopic adaptability. The 1.9 eV bandgap of P3HT enables substantial light absorption within the visible spectrum, yielding a significant photocurrent. By assembling 50 photoelectric sensors into a 10 × 5 array, we successfully demonstrated an image formation process that emulates photopic adaptation, specifically in recognizing letters. This easily fabricated, self-powered retinomorphic photoelectric device has great potential to mimic retinal structures, thereby heralding a new frontier in visual sensory devices.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.