Optical and Electronic Energy Band Properties of Nb-Doped β-Ga2O3 Crystals
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Crystal Quality
3.2. Bandgap and Defect-Related Luminescence
3.3. Electronic Energy Band Structures
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Samples | S1 | S2 | S3 | S4 | ||||
---|---|---|---|---|---|---|---|---|
Crystal faces | 2θ | FWHM | 2θ | FWHM | 2θ | FWHM | 2θ | FWHM |
(400) | 30.12 | 0.110 | 30.12 | 0.108 | 30.20 | 0.094 | 30.14 | 0.072 |
(600) | 45.89 | 0.130 | 45.9 | 0.139 | 45.99 | 0.174 | 45.85 | 0.095 |
(800) | 62.58 | 0.190 | 62.57 | 0.158 | 62.68 | 0.153 | 62.57 | 0.09 |
(1200) | 102.29 | 0.281 | 102.26 | 0.203 | 102.49 | 0.299 | 102.32 | 0.21 |
Sample | Ga 2p 1/2 | Ga 2p 3/2 | Ga | O 1s | O | |||
---|---|---|---|---|---|---|---|---|
B.E. (eV) | Area | B.E. (eV) | Area | Ratio% | B.E. (eV) | Area | Ratio% | |
S1 | 1145.7 | 18250 | 1118.7 | 36435 | 41.4 | 530.7 | 77453 | 58.6 |
S2 | 1145.4 | 23873 | 1118.5 | 47134 | 41.6 | 530.48 | 99503 | 58.4 |
S3 | 1145.5 | 22035 | 1118.6 | 43616 | 41.5 | 530.52 | 92349 | 58.5 |
S4 | 1145.8 | 23697 | 1118.9 | 46686 | 42.3 | 530.86 | 96144 | 57.7 |
Simples | S1 | S2 | S3 | S4 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Peaks (eV) | 3.25 | 2.69 | 1.77 | 3.23 | 2.78 | 1.77 | 3.04 | 2.62 | 1.67 | 3.41e | 3.10 | 1.90 | 1.73 |
FWHM (nm) | 80.8 | 14 | 183 | 80.6 | 124 | 174 | 93 | 110 | 223 | 60 | 85 | 70 | 142 |
Ratio of Area | 1:0.8:0.41 | 1:0.63:0.33 | 1:0.29:0.17 | 1:1.15:0.102:0.73 |
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Long, X.; Niu, W.; Wan, L.; Chen, X.; Cui, H.; Sai, Q.; Xia, C.; Talwar, D.N.; Feng, Z. Optical and Electronic Energy Band Properties of Nb-Doped β-Ga2O3 Crystals. Crystals 2021, 11, 135. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11020135
Long X, Niu W, Wan L, Chen X, Cui H, Sai Q, Xia C, Talwar DN, Feng Z. Optical and Electronic Energy Band Properties of Nb-Doped β-Ga2O3 Crystals. Crystals. 2021; 11(2):135. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11020135
Chicago/Turabian StyleLong, Xianjian, Wenlong Niu, Lingyu Wan, Xian Chen, Huiyuan Cui, Qinglin Sai, Changtai Xia, Devki N. Talwar, and Zhechuan Feng. 2021. "Optical and Electronic Energy Band Properties of Nb-Doped β-Ga2O3 Crystals" Crystals 11, no. 2: 135. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11020135