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The Dominant Effects of Hopping Conduction on the Seebeck Coefficient and the Hall Mobility in p-Type CuInTe2 and CuGaTe2

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Abstract

Simultaneous fits to reported experimental data including the temperature dependence of the electrical conductivity, Seebeck coefficient, and Hall mobility on p-type samples of CuInTe2 and CuGaTe2 were performed based on a two-band model which includes hopping conduction in an impurity band. It was revealed for both materials that the Seebeck coefficient and the Hall mobility are dominated by hopping conduction in a wide temperature range around room temperature. The present cases of CuInTe2 and CuGaTe2 are rare cases in which hopping conduction occurs in impurity bands formed from impurity states involving native defects.

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    Yasutomo Kajikawa

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Kajikawa, Y. The Dominant Effects of Hopping Conduction on the Seebeck Coefficient and the Hall Mobility in p-Type CuInTe2 and CuGaTe2. J. Electron. Mater. 52, 8303–8318 (2023). https://doi.org/10.1007/s11664-023-10735-w

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