Abstract
The amplitude and phase of the photoacoustic (PA) signal have been studied in ternary semiconducting compound CdIn2S4. By measurements of the phase difference of variable chopping frequency of the incident light on different thickness of samples, thermal conductivity and thermal diffusivity were given to be 1.3×10-2 cal/g·sec·K and 2.3×10-2/sec, respectively. The treatment of sample surface has been also studied: the PA amplitude shows gentle slope with a rough surface layer. The phase difference of the PA signal agreed well with a two-layer model by extending the Rosencwaig and Gersho theory.
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