High-temperature electron mobilities in LPE-Grown GaP |
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Authors: | I. J. Fritz L. R. Dawson G. C. Osbourn |
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Affiliation: | (1) Sandia National Laboratories, 87185 Albuquerque, New Mexico |
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Abstract: | We report measurements to 500°C of resistivity and Hall mobility in Sn-doped, n-type GaP grown by liquid phase epitaxy. Samples with room-temperature carrier densities between 1 × 1016 and 1 × 1018cm−3 were studied. Mobilities were in the range 100–180 cm2/V-sec at room temperature and in the range 27–35 cm2/V-sec at 400°C. Carrier densities increased by only about a factor of two with increasing temperature. Theoretical fits to the mobility data were made by considering contributions from intervalley, polar-optic, acoustic-deformation-potential, and ionlzed-impurity scattering mechanisms. Our results confirm the utility of GaP for high-temperature device applications and provide important information on electrical parameters needed for device modeling and design. |
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Keywords: | gallium phosphide high-temperature electronics electrical transport liquid phase epitaxy |
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