Author:
Wu Jinhua,Sun Hao,Zhang Ruiling,Yao Shipeng,Hou Zhangyu,Ning Cun-Zheng
Abstract
We demonstrated wavelength-specific opposite photoresponses on a PMMA-modified graphene photodetector with response wavelengths ranging from 405 to 1650 nm. A record-high normalized gain for the negative response of 1.88×10-3 m2V-1 was achieved.