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

Here, an approach is presented to design refractory-metal incorporated Ga 2O 3-based materials with controlled structural and optical properties. The molybdenum (Mo)-content in Ga 2O 3 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-Ga 2O 3), higher Mo-content results in amorphization. Chemically-induced band gap variability (E g ~ 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.
Authors:
 [1] ;  [2] ;  [3] ;  [1]
  1. Univ. of Texas, El Paso, TX (United States). Dept. of Mechanical Engineering
  2. Univ. of Texas, El Paso, TX (United States). Dept. of Mechanical Engineering; Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Publication Date:
Grant/Contract Number:
AC0576RL01830; ECCS-1509653
Type:
Accepted Manuscript
Journal Name:
Chemical Physics Letters
Additional Journal Information:
Journal Volume: 684; Journal Issue: C; Journal ID: ISSN 0009-2614
Publisher:
Elsevier
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Gallium oxide; Mo doping; Optical properties
OSTI Identifier:
1368411

Battu, Anil K., Manandhar, S., Shutthanandan, V., and Ramana, C. V.. Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga2O3 nanocrystalline films. United States: N. p., Web. doi:10.1016/J.CPLETT.2017.06.063.
Battu, Anil K., Manandhar, S., Shutthanandan, V., & Ramana, C. V.. Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga2O3 nanocrystalline films. United States. doi:10.1016/J.CPLETT.2017.06.063.
Battu, Anil K., Manandhar, S., Shutthanandan, V., and Ramana, C. V.. 2017. "Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga2O3 nanocrystalline films". United States. doi:10.1016/J.CPLETT.2017.06.063. https://www.osti.gov/servlets/purl/1368411.
@article{osti_1368411,
title = {Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga2O3 nanocrystalline films},
author = {Battu, Anil K. and Manandhar, S. and Shutthanandan, V. and Ramana, C. V.},
abstractNote = {Here, 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.},
doi = {10.1016/J.CPLETT.2017.06.063},
journal = {Chemical Physics Letters},
number = C,
volume = 684,
place = {United States},
year = {2017},
month = {7}
}