Effects of sodium on electrical properties in Cu2ZnSnS 4 single crystal

Akira Nagaoka, Hideto Miyake, Tomoyasu Taniyama, Koichi Kakimoto, Yoshitaro Nose, Michael A. Scarpulla, Kenji Yoshino

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Abstract

We have studied the effect of sodium on the electrical properties of Cu2ZnSnS4 (CZTS) single crystal by using temperature dependence of Hall effect measurement. The sodium substitution on the cation site in CZTS is observed from the increasing of unit-cell size by powder X-ray diffraction. Sodium increases the effective hole concentration and makes the thermal activation energy smaller. The degree of compensation decreases with sodium incorporation, thus the hole mobility is enhanced. We revealed that sodium is important dopant in CZTS to control the electrical properties.

Original languageEnglish
Article number152101
JournalApplied Physics Letters
Volume104
Issue number15
DOIs
Publication statusPublished - Jan 1 2014

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Nagaoka, A., Miyake, H., Taniyama, T., Kakimoto, K., Nose, Y., Scarpulla, M. A., & Yoshino, K. (2014). Effects of sodium on electrical properties in Cu2ZnSnS 4 single crystal. Applied Physics Letters, 104(15), [152101]. https://doi.org/10.1063/1.4871208