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10 October 2020 Polymer anti-solvent additives for high-performance perovskite photodetector
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Organic-inorganic metal halide perovskite material is an emerging semiconductor material that is widely used in functional devices such as solar cells and photodetectors. It has many advantages, low preparation cost, high light absorption coefficient, long carrier diffusion length, high carrier mobility, etc. However, due to the instability of perovskite, it is easy to decompose in the water and oxygen environment, which has become an obstacle to its development. In this paper, by adding polymethyl methacrylate to the anti-solvent to reduce the perovskite grain boundaries, improve directional growth and the quality of the film. The performance of the photodetector prepared by this method has been effectively improved, there is a significant photocurrent under illumination, and the stability has also been improved. This method provides a good candidate for the next generation of high-performance photodetectors.
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Hongliang Zhao, Yating Zhang, Tengteng Li, Qingyan Li, Zhiliang Chen, Yifan Li, and Jianquan Yao "Polymer anti-solvent additives for high-performance perovskite photodetector", Proc. SPIE 11547, Optoelectronic Devices and Integration IX, 1154713 (10 October 2020);

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