In this paper, we study the second harmonic generation in piezoelectric semiconductors with energy-dependent relaxation times in the presence of an acoustic wave. The interaction of electrons with the acoustic wave is taken into account through piezoelectric coupling. In contrast to earlier works, we use the collision term, given by Sharma and Kaw which is valid for energy-dependent relaxation times and use it to solve the Boltzmann equation. Our calculations show that the values of the second harmonic yield for various values of ql differ significantly for ql≪1 and are close for ql≫1 with the corresponding values obtained by using the Cohen-Harrison-Harrison (CHH) collision model. Further, the second harmonic yield has a maximum at ql≫1.
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Singh et al. (1976) studied this question.
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