High-Performance Copper Oxide Visible-Light Photodetector via Grain-Structure Model.

ABSTRACT: Recently, copper oxide (CuO)-based visible-light photodetectors have attracted great interest due to their narrow bandgap (1.2 eV), low cost, and ease of fabrication. However, there has been insufficient theoretical analysis and study of CuO-based photodetectors, resulting in inferior performance in terms of responsivity, detectivity, and response speed. This work develops a method to enhance the performance of CuO photodetectors by engineering a grain structure based on a newly-developed theoretical model. In the developed theoretical grain-structure model, the grain size and the connections between grains are considered because they can strongly affect the optoelectronic characteristics of CuO photodetectors. Based upon the proposed model, the engineered CuO device achieves enhanced opto

SUBMITTER: Song HJ 

PROVIDER: S-EPMC6517403 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature