Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga 2 O 3 nanocrystalline films

Battu, Anil K.; Manandhar, S.; Shutthanandan, V.; Ramana, C. V.

doi:10.1016/j.cplett.2017.06.063

Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga 2 O 3 nanocrystalline films

Journal Article · Fri Sep 01 00:00:00 EDT 2017 · Chemical Physics Letters

DOI:https://doi.org/10.1016/j.cplett.2017.06.063· OSTI ID:1390408

Battu, Anil K.; Manandhar, S.; Shutthanandan, V.; Ramana, C. V.

An approach is presented to design refractory-metal incorporated Ga2O3-based materials with controlled structural and optical properties. The molybdenum (Mo)-content in Ga2O3 was varied from 0 to 11 at% in the sputter-deposited Ga-Mo-O films. Molybdenum was found to significantly affect the structure and optical properties. While low Mo-content (≤4 at%) results in the formation of single-phase (β-Ga2O3), higher Mo-content results in amorphization. Chemically-induced band gap variability (Eg~1 eV) coupled with structure-modification indicates the electronic-structure changes in Ga-Mo-O. The linear relationship between chemical-composition and optical properties suggests that tailoring the optical-quality and performance of Ga-Mo-O films is possible by tuning the Mo-content.

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1390408

Report Number(s):: PNNL-SA-127814; 46698; KP1704020

Journal Information:: Chemical Physics Letters, Journal Name: Chemical Physics Letters Journal Issue: C Vol. 684; ISSN 0009-2614

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

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