Controlled optical properties via chemical composition tuning in molybdenum-incorporated β-Ga2O3 nanocrystalline films

被引：21
作者：
Battu, Anil K. [1 ]
Manandhar, S. [1 ,2 ]
Shutthanandan, V. [2 ]
Ramana, C. V. [1 ]
机构：
[1] Univ Texas El Paso, Dept Mech Engn, El Paso, TX 79968 USA
[2] Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA
来源：
CHEMICAL PHYSICS LETTERS | 2017年 / 684卷
基金：
美国国家科学基金会;
关键词：
Gallium oxide; Mo doping; Optical properties; OXIDE THIN-FILMS; ROOM-TEMPERATURE FERROMAGNETISM; BETA-GALLIUM OXIDE; CRYSTAL STRUCTURE; GA2O3; MORPHOLOGY; FRAMEWORKS; NANOWIRES; GROWTH; ROUTE;
D O I：
10.1016/j.cplett.2017.06.063
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 (beta-Ga2O3), higher Mo-content results in amorphization. Chemically-induced band gap variability (E-g similar to 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. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：363 / 367
页数：5
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