Title :
Giant photoconductivity gain in nanowire photodetectors and the effect of photo-modulation of contact injection
Author :
Fernandes, Gustavo E. ; Park, Hongsik ; Kim, Jin Ho ; Xu, Jimmy
Author_Institution :
Sch. of Eng., Brown Univ., Providence, RI, USA
Abstract :
We demonstrate large photoconductive gain on single-crystalline Bi2S3 nanowire photodetectors. The photoconductive gain is found to be significantly enhanced by optical modulation of the electrical contacts, which accounts for >;90% of the conductivity change.
Keywords :
bismuth compounds; nanocontacts; nanowires; optical modulation; photoconductivity; photodetectors; Bi2S3; contact injection photomodulation; electrical contacts; giant photoconductivity gain; optical modulation; single crystalline nanowire photodetector; Contact resistance; Lighting; Optical device fabrication; Optical modulation; Optical saturation; Photodetectors; Resistance;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
