Journal
CRYSTAL RESEARCH AND TECHNOLOGY
Volume 43, Issue 9, Pages 953-958Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/crat.200811134
Keywords
porous GaAs; thermal conductivity; photoacoustic spectroscopy; phonon confinement
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Funding
- University Grant Commission (UGC), India
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Nanostructured porous GaAs samples were prepared by electrochemical anodic dissolution of GaAs for various current densities and etching periods. The samples are characterized by SEM and photoluminescence (PL) where a blue shift is observed in PL. Thermal properties of this nanostructured GaAs are then Studied by Photoacoustic (PA) spectroscopy, where one order decrease in thermal conductivity of porous GaAs compared to bulk is observed. Further it is shown that the thermal conductivity of porous GaAs decreases with decrease in size of the particles. (C) 2008 WILEY-VCH Verlag GmbH & Co. Weinheim.
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