High-sensitive and fast response to 255 nm deep-UV light of CH₃NH₃PbX₃ (X = Cl, Br, I) bulk crystals.

ABSTRACT: Deep-UV light detection has important application in surveillance and homeland security regions. CH₃NH₃PbX₃ (X = Cl, Br, I) materials have outstanding optical absorption and electronic transport properties suitable for obtaining excellent deep-UV photoresponse. In this work, we have grown high-quality CH₃NH₃PbX₃ (X = Cl, Br, I) bulk crystals and used them to fabricate photodetectors. We found that they all have high-sensitive and fast-speed response to 255 nm deep-UV light. Their responsivities are 10-10³ times higher than MgZnO and Ga₂O₃ detectors, and their response speeds are 10³ times faster than Ga₂O₃ and ZnO detectors. These results indicate a new promis

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC6170544 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature