Organic-inorganic hybrid perovskite is a new type of optoelectronic material with excellent performance. It has a high light absorption coefficient in the visible light region, and has a long carrier diffusion length and lifetime. It has been widely used in photovoltaic, light-emitting and other devices. field. So, is it possible to combine organic-inorganic hybrid perovskite materials with organic single-crystal semiconductor materials to broaden their respective spectral response ranges? Recently, the team of Jie Jiansheng of Soochow University successfully fabricated a perovskite nanoparticle/organic semiconductor single crystal array composite structure and realized its application in dual-band phototransistors and secure communications.

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