On the Characterization of Semi-Insulating GaAs by Hall, Photo-Hall, Photoconductivity, and Photomagnetoelectric Measurements
The electrical properties of semi-insulating Cr-doped GaAs are quite sensitive to monochromatic light irradiation, and thus photoelectronic data are of great value in elucidating the nature of this material. In this paper we present a theoretical basis for the determination of the photoconductivity, photo-Hall, and photomagnetoelectric effects, measure these effects in typical GaAs:Cr crystals, and show how the results lead to useful information about substrate quality.
Look, D. C.
(1978). On the Characterization of Semi-Insulating GaAs by Hall, Photo-Hall, Photoconductivity, and Photomagnetoelectric Measurements. Journal of Electronic Materials, 7 (1), 147-157.