CsCuI/ZnO Heterostructure for Flexible Visible-Blind Ultraviolet Photodetection.

Wearable, portable, and biocompatible optoelectronic devices made of all-green and abundant materials and fabricated by low-temperature solution method are the key point in the development of next generation of intelligent optoelectronics. However, this is usually limited by the weaknesses of mono-component materials, such as non-adjustable photoresponse region, high carrier recombination rate, high signal-to-noise ratio, as well as the weak mechanical flexibility of bulk films. In this work, the CsCuI/ZnO heterostructure flexible photodetectors were constructed by a low-temperature solution method combined with spin-coating technique.