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Title: Effects of sodium on electrical properties in Cu{sub 2}ZnSnS{sub 4} single crystal

We have studied the effect of sodium on the electrical properties of Cu{sub 2}ZnSnS{sub 4} (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.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6]
  1. Department of Applied Physics and Electronic Engineering, University of Miyazaki, Miyazaki 889-2192 (Japan)
  2. Department of Electrical and Electronic Engineering, Mie University, Tsu 514-8507 (Japan)
  3. Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)
  4. Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580 (Japan)
  5. Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501 (Japan)
  6. Materials Science and Electrical Engineering Departments, University of Utah, Salt Lake City, Utah 84112 (United States)
Publication Date:
OSTI Identifier:
22262635
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACTIVATION ENERGY; ELECTRICAL PROPERTIES; HOLE MOBILITY; MONOCRYSTALS; SODIUM; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION