Electron spin relaxation times in excess of the localized limit have been measured in MBE n-GaAs layers, with the times depending on the doping concentration. We have optically oriented the electrons in the samples, and measured spin lifetimes via luminescence depolarization in a transverse magnetic
Correlation of photoluminescence and electrical measurements in identifying contaminants in MBE-grown GaAs
β Scribed by J.M. Meese; P.E. Chumbley; F.A. Chambers; B.A. Vojak; G.W. Zajac
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 203 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0749-6036
No coin nor oath required. For personal study only.
β¦ Synopsis
Data from photoluminescence peak heights are correlated with Hall and Capacitance-Voltage measurements to determine impurity compensation and specie concentrations in MBE-grown GaAs samples. Quantitative information is obtained and used to identify and subsequently reduce a source of significant carbon contamination.
π SIMILAR VOLUMES
The effective electrical conductivity of p type porous silicon is determined both theoretically and experimentally for different porosities ranging from 30% to 80%. In this work, Effective Medium Approximation (EMA) model was used as a theoretical support. The porous silicon samples were prepared by