2022
Bulletin of the Lebedev Physics Institute, Q4
Статьи в журналах
Bryushinin, M.A., Sokolov, I.A., Zavestovskaya, I.N. et al. Three Non-Steady-State Photo-EMF Excitation Modes in a Gallium Oxide Crystal. Bull. Lebedev Phys. Inst. 49, 67–73 (2022)
This paper presents the results of measurements of the non-steady-state photo-emf in a monoclinic Ga2O3 crystal at a laser wavelength of 457 nm. The crystal has insulating properties and shows high transparency for visible light, which does not prevent the formation of the dynamic space-charge grating and non-steady-state photo-emf signal recording in external (null, dc, and ac) electric fields. The measured signal amplitude is analyzed as a function of the phase modulation frequency, spatial frequency of the interference pattern, and the electric field. The crystal photoconductivity, spectral sensitivity, and diffusion length of photoexcited carriers are determined for the chosen wavelength.