Defect-induced enhancement and quenching control of photocurrent in few-layer graphene photodetectors.
A novel approach is presented for achieving an enhanced photoresponse in a few layer graphene (FLG) based photodetector that is realized by introducing defect sites in the FLG. Fabrication induced wrinkle formation in graphene presented a four-fold enhancement in the photocurrent when compared to unfold FLG. Interestingly, it was observed that the addition of few multiwalled carbon nanotubes to an FLG improves the photocurrent by two-fold along with a highly stable response as compared to FLG alone.
Department of Instrumentation and Applied Physics, Indian Institute of Science , Bangalore, Karnataka 560012, India.
Prarthana
P
Gowda
Tushar
T
Sakorikar
Siva K
SK
Reddy
Darim B
DB
Ferry
Abha
A
Misra