John G. Long, Peter C. Searson, et al.
JES
We study the origin of a photocurrent generated in doped multilayer black phosphorus (BP) phototransistors, and find that it is dominated by thermally driven thermoelectric and bolometric processes. The experimentally observed photocurrent polarities are consistent with photothermal processes. The photothermoelectric current can be generated up to a micrometer away from the contacts, indicating a long thermal decay length. With an applied source-drain bias, a photobolometric current is generated across the whole device, overwhelming the photothermoelectric contribution at a moderate bias. The photoresponsivity in the multilayer BP device is two orders of magnitude larger than that observed in graphene. © 2014 American Physical Society.
John G. Long, Peter C. Searson, et al.
JES
G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering