Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4871208
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Funding
- JSPS Research Fellowships for Young Scientists
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0001630]
- Grants-in-Aid for Scientific Research [26289378] Funding Source: KAKEN
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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. (C) 2014 AIP Publishing LLC.
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