A. G. U. Perera
Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303ABSTRACT
An analytic model is presented to describe the space-charge-limited (SCL) conduction in Si homojunction interfacial work-function internal photoemission far-infrared detectors. The basic detector unit is a thin n+-i-n+ structure, which is operated at low temperatures and characterized by an interfacial work function at the n+-i interface. The unique aspects of this case lead to simple analytic expressions for all variables of interest. The barrier shape and free-carrier concentration distribution in the i layer thickness, and compensating acceptor concentration, are calculated. The SCL current-voltage characteristic is also investigated as a function of i layer parameters. The results obtainted are useful for the IR detector design and performance optimization. © 1996 American Institute of Physics. [S0021-8979(96)01708-8]
Return to
Dr. Perera's Homepage
Return to
Physics & Astronomy Homepage