Structural, Electronic, and Thermal Properties of CdSnAs 2

Gunatilleke, Wilarachchige D. C. B.; Hobbis, Dean; Poddig, Hagen; Tinkess, Austin; Beekman, Matt; Wang, Hsin; Wei, Kaya; Baumbach, Ryan E.; Nolas, George S.

doi:10.1021/acs.inorgchem.9b03424

DOE OSTI · 1615195

Structural, Electronic, and Thermal Properties of CdSnAs 2

Gunatilleke, Wilarachchige D. C. B.·Hobbis, Dean·Poddig, Hagen·Tinkess, Austin·Beekman, Matt·Wang, Hsin·Wei, Kaya·Baumbach, Ryan E.·Nolas, George S.

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Abstract

Structural, electrical, and thermal properties of CdSnAs 2 , with analyses from temperature-dependent transport properties over a large temperature range, are reported. Phase-pure microcrystalline powders were synthesized that were subsequently densified to a high-density homogeneous polycrystalline specimen for this study. Temperature-dependent transport indicates n-type semiconducting behavior with a very high and nearly temperature independent mobility over the entire measured temperature range, attributed to the very small electron effective mass of this material. The Debye model was successfully applied to model the thermal conductivity and specific heat. Furthermore, this work contributes to the fundamental understanding of this material, providing further insight and allowing for investigations into altering this and related physical properties of these materials for technological applications.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY materials scattering temperature dependence thermoelectric materials thermoelectrics

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Gunatilleke, Wilarachchige D. C. B., Hobbis, Dean, Poddig, Hagen, Tinkess, Austin, Beekman, Matt, Wang, Hsin, Wei, Kaya, Baumbach, Ryan E., Nolas, George S.. 2020-02-12. Structural, Electronic, and Thermal Properties of CdSnAs 2. https://doi.org/10.1021/acs.inorgchem.9b03424

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