Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3573795
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- ANU
- CSIRO
- ARC (Australia)
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A combination of laser plasma ablation and strain control in CdO/ZnO heterostructures is used to produce and stabilize a metastable wurtzite CdO nanophase. According to the Raman selection rules, this nanophase is Raman-active whereas the thermodynamically preferred rocksalt phase is inactive. The wurtzite-specific and thickness/strain-dependent Raman fingerprints and phonon modes are identified and can be used for reliable and inexpensive nanophase detection. The wurtzite nanophase formation is also confirmed by x-ray diffractometry. The demonstrated ability of the metastable phase and phonon mode control in CdO/ZnO heterostructures is promising for the development of next-generation light emitting sources and exciton-based laser diodes. (C) 2011 American Institute of Physics. [doi:10.1063/1.3573795]
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