Absolute calibration of photodetectors: photocurrent multiplication versus photocurrent subtraction

Polarization Dependence of Photocurrent in Quantum-Dot Infrared Photodetectors

T. Gebhard1, P.L. Souza1,2, F.F. Schrey1, G. Strasser1, K. Unterrainer1, M.P. Pires3, S.M. Landi2, J.M. Villas-Boas4, N. Studart5 1Photonics Institute and Center for Microand Nanostructures, TU-Wien, A-1040 Vienna, Austria 2LabSem, CETUC, PUC-Rio,Rua Marquês de Sao Vicente 225, Rio de Janeiro, 22451-900, Brazil 3Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil...

Diameter Dependent Photocurrent in Infrared InAsSb Nanowire Photodetectors

Increased normal incidence photocurrent in quantum dot infrared photodetectors

Photocurrent noise in multi-quantum-well infrared photodetectors

We report on photocurrent noise in AlGaAs/GaAs quantum-well infrared photodetectors having nominally the same design, except the number of wells N . The power spectral density does not scale as the inverse of the number of wells N in the presence of infrared radiation. These features can be understood by taking into account the nonlinearity arising at high infrared power as a consequence of the...

Anomalous Transient Photocurrent

The operating principle in conventional optoelectronic devices is based on steady-state photocurrent. In these devices, photogenerated carriers have to travel long distances across the devices. Various dissipation mechanisms such as traps, scattering and recombination dissipate these carriers during transport, and decrease device response speed as well as optoelectronic conversion efficiency, e...