Determination of the Optical Absorption Coefficient Spectra of Thin Semiconductor Layers from Their Photoacoustic Spectra
Leszek BychtoFaculty of Electronics and Computer Science, Koszalin University of Technology, 2 Śniadeckich St, 75-453, Koszalin, PolandM. MalińskiFaculty of Electronics and Computer Science, Koszalin University of Technology, 2 Śniadeckich St, 75-453, Koszalin, Poland
2018en
ABI
Abstract
This paper presents the new method of computation of the optical absorption coefficient spectra from the normalized photoacoustic amplitude spectra of thin semiconductor samples deposited on the optically transparent and thermally thick substrates. The simple equation for computations of the optical absorption coefficient spectrum from the normalized photoacoustic amplitude spectrum is derived and discussed. This model applied for computations of the optical absorption coefficient spectrum of thin germanium samples, deposited on the transparent glass substrate, from their photoacoustic spectra proved its correctness and usefulness.
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Cited by 20 references