A n2+−n+−n blocking contact structure for an intrinsic photoconductor

Autor: Vishnu Gopal, Rachana Kumar, K.C. Chhabra
Rok vydání: 1991
Předmět:
Zdroj: Infrared Physics. 31:435-440
ISSN: 0020-0891
DOI: 10.1016/0020-0891(91)90020-g
Popis: The effect of adding a highly doped layer (n2+) to a conventional (n+−n) blocking contact structure on the low frequency responsivity of a photoconductor has been studied. Analytical expressions relating the responsivity to the structure of a n2+−n+−n blocking contact are presented. Calculations have shown that addition of a n2+ layer enhances the responsivity further. Optimum thickness of n2+ and n+ layers are however dependent on the carrier recombination velocity at the metal-semiconductor interface.
Databáze: OpenAIRE