By coating with a carbon film and graphene sheet (GS) on position-sensitive detectors based on the metal–oxide–semiconductor structure, sensitivity, linearity, and saturation power are significantly improved. We attribute this enhancement of absorptivity to lasers. The improvement effect of carbon film is more obvious than that of GS coating because of GS’s high conductivity.
© 2011 Optical Society of America
Original Manuscript: July 1, 2011
Revised Manuscript: October 8, 2011
Manuscript Accepted: September 9, 2011
Published: October 25, 2011
Chaomin Zhang, Pengfei Zhu, Fuxin Wang, Yunxia Ping, Jianbao Wu, Qi Lin, and Bai Liang, "Enhancing the lateral photovoltaic effect by coating the absorbing film on metal–oxide–semiconductor structure," Appl. Opt. 50, G127-G130 (2011)