Numerical analysis of piezoelectric photoacoustic spectra

Abstract

This paper is an introduction to the analysis of the piezoelectric photoacoustic spectra of single-layer seminductor samples. The analysis comprises, among other things, the temperature distribution formula necessary for the computations of the piezoelectric amplitude and phase spectra. It presents also the procedures of determination of the piezoelectric spectra of semiconductor materials from the optical absorption coefficient ones and the influence of many experimental parameters on the piezoelectric spectra for semiconductors exhibiting either direct or indirect electron type transitions. The origin of the characteristic structure of the piezoelectric spectra is analyzed and discussed.