Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1784997 | Infrared Physics & Technology | 2009 | 4 Pages |
Abstract
Optimization of dark current is a key technological issue to be addressed in order to improve quantum-well infrared photodetector (QWIP) performance. We develop a model for the description of current–voltage curves in mid-infrared QWIPs, which usually span a range of electric fields in which both low-field as well as high-field carrier transport effects are visible, especially at low temperatures. The model separates the I–V curve into a low-field and a high-field region allowing us to identify and separate the effects ascribed to miniband transport and carrier localization, respectively. We then compare simulations with our measurements of the I–V curves of mid-ir QWIPs finding a good quantitative agreement between theory and experiment.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Atomic and Molecular Physics, and Optics
Authors
Fabrizio Castellano, Rita C. Iotti, Fausto Rossi, Jerome Faist, Emmanuel Lhuillier, Vincent Berger,