Chromium contamination in VPE InP from photoconductivity spectra
- 5 March 1981
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 17 (5) , 188-190
- https://doi.org/10.1049/el:19810133
Abstract
A photoconductivity study has been made of nominally undoped VPE n-InP materials grown on semi-insulating InP:Fe substrates. The photoresponse spectra obtained indicate features characteristic of Cr deep acceptors. By comparing the magnitudes of the photoresponse with that of a back-doped InP:Cr reference sample, the concentration has been estimated at between 2 and 8×1014 cm−3.Keywords
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