期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 29, 页码 33944-33951出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c04177
关键词
beta-aluminum gallium oxide; band offset; X-ray photoelectron spectroscopy (XPS); Tauc plots; metal-organic chemical vapor deposition (MOCVD); heterostructure
资金
- National Science Foundation [1757979]
- Center for Advanced Surface Engineering, under the National Science Foundation [IIA-1457888]
- Arkansas EPSCoR Program, ASSET III
- NISE - NSWC Crane
- AFOSR and ONR [IIA-1457888, EEC-1449548]
- National Science Foundation Engineering Research Center for Power Optimization of Electro-Thermal Systems (POETS)
- [FA9550-7-P-0029]
- [N00014-16-P-2058]
- Div Of Engineering Education and Centers
- Directorate For Engineering [1757979] Funding Source: National Science Foundation
The band offsets for the beta-(Al0.21Ga0.79)(2)O-3/beta-Ga2O3 (010) heterojunction were experimentally measured, and the resulting band alignment was determined to be of type II. These findings provide valuable data for the design and prediction of beta-(AlxGa1-x)(2)O-3 heterojunction-based devices.
The band offsets for the beta-(Al0.21Ga0.79)(2)O-3/beta-Ga2O3 (010) heterojunction have been experimentally measured by X-ray photoelectron spectroscopy. High-quality beta-(Al0.21Ga0.79)(2)O-3 films were grown by metal-organic chemical vapor deposition for characterization. The indirect band gap of beta-(Al0.21Ga0.79)(2)O-3 was determined by optical transmission to be 4.69 +/- 0.03 eV with a direct transition of 5.37 +/- 0.03 eV, while beta-Ga2O3 was confirmed to have an indirect band gap of 4.52 +/- 0.03 eV with a direct transition of 4.94 +/- 0.03 eV. The resulting band alignment at the heterojunction was determined to be of type II with the valence and conduction band edges of beta-(Al0.21Ga0.79)(2)O-3 being -0.26 +/- 0.08 and 0.43 +/- 0.08 eV, respectively, above those of beta-Ga2O3 (010). These values can now be used to help better design and predict the performance of beta-(AlxGa1-x)(2)O-3 heterojunction-based devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据