Detector Structures Based on Epitaxial Gallium Arsenide Compensated by Chromium

Autor: E.P. Drugova, V. A. Chubirko, D.Y. Mokeev, L.P. Porokhovnichenko, M. D. Vilisova, I. V. Ponomarev, O.P. Tolbanov
Rok vydání: 2006
Předmět:
Zdroj: 2005 Siberian Conference on Control and Communications.
DOI: 10.1109/sibcon.2005.1611203
Popis: Detector structures based on VPE GaAs layers, compensated by Cr at diffusion process, have been studied at present article. Detectors were with active region both n-type and /spl pi/-type. It was shown, that at structures based on n-type layers width of space charge region depends on applied reverse bias. And charge collection efficiency from /spl alpha/-particles increased with bias. In structures based on /spl pi/-type layers such dependence is particularly absent and charge collection efficiency is not changed. Both types of structures has high charge collection efficiency from /spl gamma/-irradiation. At applied bias in structures based on n-type layers at the process of charge collection takes part not only electrons but also holes.
Databáze: OpenAIRE