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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/2406

Title: Photoacoustic investigation of doped InP using open cell configuration
Authors: Sajan, D George
Vallabhan, C P G
Heck, M
Radhakrishnan, P
Nampoori, V P N
Technology
Keywords: Photoacoustic
Inp
Thermal Diffusivity
Issue Date: 2002
Publisher: Taylor & Francis
Abstract: An open cell photoacoustic (PA) configuration has been employed to evaluate the thermal diffusivity of intrinsic InP as well as InP doped with tin and iron. Thermal diffusivity data have been evaluated from variation of phase of PA signal as a function of modulation frequency. In doped samples, we observe a reduced value for thermal diffusivity in comparison with intrinsic InP. We also observed that, while the phase of the PA signal varies linearly with the square root of chopping frequency for doped samples, the intrinsic material does not exhibit such behaviour in the experimental frequency range. These results have been interpreted in terms of the heat generation and phonon assisted heat diffusion mechanisms in semiconductors.
URI: http://dyuthi.cusat.ac.in/purl/2406
Appears in Collections:Dr.C P Girijavallabhan

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