High-performance perovskite photodetector with the additive of antisolvent to improve the quality of the perovskite films

Tengteng Li; Qingyan Li; Xin Ding; Xin Tang; Yating Zhang; Zhiliang Chen; Yifan Li; Lufan Jin; Hongliang Zhao; Jie Li; Silei Wang; Jianquan Yao

doi:10.1117/12.2573736

10 October 2020 High-performance perovskite photodetector with the additive of antisolvent to improve the quality of the perovskite films

Tengteng Li, Qingyan Li, Xin Ding, Xin Tang, Yating Zhang, Zhiliang Chen, Yifan Li, Lufan Jin, Hongliang Zhao, Jie Li, Silei Wang, Jianquan Yao

Author Affiliations +

Proceedings Volume 11547, Optoelectronic Devices and Integration IX; 115471B (2020) https://doi.org/10.1117/12.2573736
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

The preparation of high-quality perovskite films with optimal morphologies is important for achieving high-performance perovskite photodetectors (PPDs). An effective strategy to optimize the morphologies is to add antisolvents during the spin-coating steps. In this work, an environment-friendly antisolvent ethyl acetate (EA) was employed to improve the quality of perovskite films, which can effectively regulate the formation of an intermediate phase staged in between a liquid precursor phase and a solid perovskite phase due to its moderate polarity, and further promote the homogeneous nucleation and crystal growth in the subsequent annealing process, thus leading to the formation of high-quality perovskite films and enhanced photodetector (PD) performance. As a result, the responsivity of the PPDs reached 0.85 A W^-1 under the illumination of 532 nm laser with the power density of 6.37 μW cm^-2 at bias voltage of -2 V. The corresponding detectivity reached 3.27 × 10¹¹ Jones, while the rise time and fall time are 256 ns and 370 ns, respectively. These results demonstrates that our developed solution-processed method with EA as antisolvent has remarkably advantages for the fabrication of high-performance PPDs and can provide a reference for the other similar research work.

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Tengteng Li, Qingyan Li, Xin Ding, Xin Tang, Yating Zhang, Zhiliang Chen, Yifan Li, Lufan Jin, Hongliang Zhao, Jie Li, Silei Wang, and Jianquan Yao "High-performance perovskite photodetector with the additive of antisolvent to improve the quality of the perovskite films", Proc. SPIE 11547, Optoelectronic Devices and Integration IX, 115471B (10 October 2020); https://doi.org/10.1117/12.2573736

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