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

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 and Lang Jiang ()
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Danlei Zhu: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Wei Jiang: Tsinghua University
Zetong Ma: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Jiajing Feng: Tsinghua University
Xiuqin Zhan: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Cheng Lu: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Jie Liu: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Jie Liu: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Yuanyuan Hu: Hunan University
Dong Wang: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Yong Sheng Zhao: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences
Jianpu Wang: Nanjing Tech University
Zhaohui Wang: Tsinghua University
Lang Jiang: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract 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.

Date: 2022
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DOI: 10.1038/s41467-022-31186-7

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