ENHANCED OPTICAL PROPORTIES OF ????-Ga2O3−????S????: A DFT STUDY
DOI:
https://doi.org/10.65164/bfnxeq58Keywords:
Here, we use DFT calculations to conduct a systematic study of the structural,Abstract
Crystalline ????-Ga2O3 has received renewed interest in recent years as a strong candidate for power electronic and optoelectronic devices [1,2], UV photodetectors [3,4], sensors, and solar cells, due to its low- cost, large-area fabrication, suitable UV transmission properties, and high breakdown electric characteristics. The performance of Ga2O3-based devices strongly depends on the quality of the material and its structural properties [3]. One of the main drawbacks limiting the use of ????- Ga2O3-based devices in broader electronic applications is its wide band gap (4.5 to 4.8 eV) [5,6]. Ga2O3- based hybrid materials have been proposed as a promising approach for band gap engineering, where the combination of wide and narrow band gap materials optimizes the overall band structure, enhancing complex electronic and optical properties [7].
References
[1]. Y. Zhang, R. Zhu, W. Huo, H. Liang, Z. Mei, Border trap-enhanced Ga2O3 nonvolatile
optoelectronic memory, Nano Lett. 24 (2024) 14398–14404.+
[2]. W. Zhong, Y. Liu, H. Huang, Z. Sun, W. Xin, W. Liu, X. Zhao, S. Long, H. Xu, Ultrathin Ga2O3 photodetector with fast response and trajectory tracking capability
fabricated by liquid metal oxidation, Nano Lett. 24 (2024) 13769–13774.
[3]. H. Huang, L. Wang, H. Zhou, H. Xing, L. Wang, W. Zhang, K. Tang, J. Huang,
[4]. L. Wang, High-performance Ga2O3 solar-blind photodetector based on thermal
oxidized Ga buffer-layer, ACS Appl. Mater. Interfaces 16 (2024) 63808–63817.
[5]. B. Fu, Z. Jia, W. Mu, Y. Yin, J. Zhang, X. Tao, A review of ????-Ga2O3 single crystal
defects, their effects on device performance and their formation mechanism, J.
Semicond. 40 (2019) 011804.
[6]. T. Matsumoto, M. Aoki, A. Kinoshita, T. Aono, Absorption and reflection of vapor
grown single crystal platelets of ????-Ga2O3, Japan. J. Appl. Phys. 13 (1974) 1578.
[7]. M. Mohamed, C. Janowitz, I. Unger, R. Manzke, Z. Galazka, R. Uecker, R.
[8]. Fornari, J.R. Weber, J.B. Varley, C.G. Van de Walle, The electronic structure of ????-
Ga2O3, Appl. Phys. Lett. 97 (2010) 211903.
[9]. X. Qin, J. Zhang, J. Liu, B. Zhao, C. Li, Q. Wan, C. Jiang, J. Wei, W.
Han,
[10]. B. Wang, L. Lv, X. Chen, H. Wan, H. Wang, Heterogeneous wafer bonding of
ultra- wide bandgap Ga2O3: A review, Mater. Today Phys. 48 (2024) 101557.