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

Journal Article · Mon Jul 22 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4816326· OSTI ID:22218300

Chen, Guibin ^[1]; Yu, K. M.; Walukiewicz, W. ^[1]; Reichertz, L. A. ^[1]

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1. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

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.

• OSTI ID: 22218300
• Journal Information: Applied Physics Letters, Vol. 103, Issue 4; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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