Ontology highlight
ABSTRACT:
SUBMITTER: Pandit B
PROVIDER: S-EPMC7745009 | biostudies-literature | 2020 Dec
REPOSITORIES: biostudies-literature
Pandit Bhishma B Schubert E Fred EF Cho Jaehee J
Scientific reports 20201216 1
A dual-functional ultraviolet (UV) photodetector with a large UV-to-visible rejection ratio is presented, in which interdigitated finger-type two-dimensional graphene electrodes are introduced to an AlGaN/GaN heterostructure. Two photocurrent generation mechanisms of photovoltaic and photoconductive dominances coexist in the device. The dominance of the mechanisms changes with the induced bias voltage. Below a threshold voltage, the device showed fairly low responsivities but fast response times ...[more]