Malysh, N. I.; Kunets, V. P.; Valiukh, S. I.; Kunets, Vas. P.
(Semiconductor Physics Quantum Electronics & Optoelectronics, 1999)
The absorption saturation of CdS single crystals was investigated in the Urbach region. It was shown that the threshold behaviour of the absorption coefficient is caused by recharging of the shallow acceptors, and the ...