2024-03-29T15:49:22Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/593042019-01-04T09:57:36Zcom_10261_93com_10261_4com_10261_36col_10261_346col_10261_289
00925njm 22002777a 4500
dc
Briones Fernández-Pola, Fernando
author
Golmayo, Dolores
author
Ortiz, Carmen
author
1981
Monocrystalline, textured and polycrystalline films of n-type PbSe were obtained by vacuum sublimation onto different types of substrates under otherwise identical experimental conditions. The effect of introducing oxygen to a certain partial pressure into the vacuum system during deposition and of the further sensitization of the films by a thermal treatment in air was studied by transmission electron microscopy and by mobility and carrier concentration measurements. A model for photoconductivity is advanced in which localized deep level centres are introduced into the grains by oxygen doping during the evaporation and become minority carrier traps when an air or selenium heat treatment lowers the Fermi level to achieve p-type conduction. © 1981.
Thin Solid Films 78: 385- 395 (1981)
http://hdl.handle.net/10261/59304
10.1016/0040-6090(81)90042-0
The role of oxygen in the sensitization of photoconductive PbSe films