Organic donor-acceptor heterojunctions for high performance circularly polarized light detection

光电探测器 圆极化 光电子学 光电流 光子学 响应度 异质结 光学 材料科学 物理 微带线
作者
Danlei Zhu,Wei Jiang,Zetong Ma,Jiajing Feng,Xiuqin Zhan,Cheng Lu,Jie Liu,Jie Liu,Yuanyuan Hu,Dong Wang,Yong Sheng Zhao,Jianpu Wang,Zhaohui Wang,Lang Jiang
出处
期刊:Nature Communications [Nature Portfolio]
卷期号:13 (1) 被引量:47
标识
DOI:10.1038/s41467-022-31186-7
摘要

Development of highly efficient and stable lateral organic circularly polarized light photodetector is a fundamental prerequisite for realization of circularly polarized light integrated applications. However, chiral semiconductors with helical structure are usually found with intrinsically low field-effect mobilities, which becomes a bottleneck for high-performance and multi-wavelength circularly polarized light detection. To address this problem, here we demonstrate a novel strategy to fabricate multi-wavelength circularly polarized light photodetector based on the donor-acceptor heterojunction, where efficient exciton separation enables chiral acceptor layer to provide differentiated concentration of holes to the channel of organic field-effect transistors. Benefitting from the low defect density at the semiconductor/dielectric interface, the photodetectors exhibit excellent stability, enabling current roll-off of about 3-4% over 500 cycles. The photocurrent dissymmetry value and responsivity for circularly polarized light photodetector in air are 0.24 and 0.28 A W-1, respectively. We further demonstrate circularly polarized light communication based on a real-time circularly polarized light detector by decoding the light signal. As the proof-of-concept, the results hold the promise of large-scale circularly polarized light integrated photonic applications.
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