Circularly polarized light detection using chiral hybrid perovskite

Chao Chen, Liang Gao, Wanru Gao, Cong Ge, Xinyuan Du, Zha Li, Ying Yang, Guangda Niu and Jiang Tang ()
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Chao Chen: Huazhong University of Science and Technology
Liang Gao: Huazhong University of Science and Technology
Wanru Gao: Huazhong University of Science and Technology
Cong Ge: Huazhong University of Science and Technology
Xinyuan Du: Huazhong University of Science and Technology
Zha Li: Huazhong University of Science and Technology
Ying Yang: Huazhong University of Science and Technology
Guangda Niu: Huazhong University of Science and Technology
Jiang Tang: Huazhong University of Science and Technology

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Circularly polarized light (CPL) detection is required in various fields such as drug screening, security surveillance and quantum optics. Conventionally, CPL photodetector needs the installation of optical elements, imposing difficulties for integrated and flexible devices. The established CPL detectors without optical elements rely on chiral organic semiconductor and metal metamaterials, but they suffer from extremely low responsivity. Organic-inorganic hybrid materials combine CPL-sensitive absorption induced by chiral organics and efficient charge transport of inorganic frameworks, providing an option for direct CPL detection. Here we report the CPL detector using chiral organic-inorganic hybrid perovskites, and obtain a device with responsivity of 797 mA W-1, detectivity of 7.1 × 1011 Jones, 3-dB frequency of 150 Hz and one-month stability, a competitive combined feature for circularly polarized light detection. Thanks to the solution processing, we further demonstrate flexible devices on polyethylene terephthalate substrate with comparable performance.

Date: 2019
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DOI: 10.1038/s41467-019-09942-z

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