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Title: Material properties of Cd{sub 1−x}Mg{sub x}O alloys synthesized by radio frequency sputtering

We have studied structural, electrical, and optical properties of sputter deposited ternary CdMgO alloy thin films with total Mg concentration as high as 44%. We found that only a fraction (50%–60%) of Mg is incorporated as substitutional Mg contributing to the modification of the electronic structures of the alloys. The electrical and optical results of the Cd{sub 1−x}Mg{sub x}O alloys are analyzed in terms of a large upward shift of the conduction band edge with increasing Mg concentration. With the increase of the intrinsic bandgap, appropriately doped Cd-rich CdMgO alloys can be potentially useful as transparent conductors for photovoltaics.
Authors:
 [1] ;  [2] ; ;  [1] ;  [1] ;  [3]
  1. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  2. (China)
  3. (United States)
Publication Date:
OSTI Identifier:
22218300
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 4; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; ALLOYS; CADMIUM COMPOUNDS; CONCENTRATION RATIO; DEPOSITION; DOPED MATERIALS; ELECTRON MOBILITY; ELECTRONIC STRUCTURE; ENERGY GAP; MAGNESIUM COMPOUNDS; OPTICAL PROPERTIES; PHOTOVOLTAIC EFFECT; RADIOWAVE RADIATION; SPUTTERING; THIN FILMS; ULTRAVIOLET SPECTRA