Highly Polarization-Deep-Ultraviolet-Sensitive β-Ga2O3 Epitaxial Films by Disrupting Rotational Symmetry and Encrypted Solar-Blind Optical Communication ApplicationClick to copy article linkArticle link copied!
- Chao Wu
- Guang ZhangGuang ZhangDepartment of Physics, Zhejiang Sci-Tech University, Hangzhou 310000, ChinaMore by Guang Zhang
- Jinhua JiaJinhua JiaDepartment of Physics, Zhejiang Sci-Tech University, Hangzhou 310000, ChinaMore by Jinhua Jia
- Haizheng HuHaizheng HuDepartment of Physics, Zhejiang Sci-Tech University, Hangzhou 310000, ChinaMore by Haizheng Hu
- Fengmin WuFengmin WuDepartment of Physics, Zhejiang Sci-Tech University, Hangzhou 310000, ChinaMore by Fengmin Wu
- Shunli WangShunli WangDepartment of Physics, Zhejiang Sci-Tech University, Hangzhou 310000, ChinaMore by Shunli Wang
- Daoyou Guo*Daoyou Guo*[email protected]Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310000, ChinaMore by Daoyou Guo
Abstract
![Abstract Image](/cms/10.1021/acs.jpclett.4c00561/asset/images/medium/jz4c00561_0006.gif)
Ultrawide bandgap semiconductor β-Ga2O3 (4.9 eV), with its monoclinic crystal structure, exhibits distinct anisotropic characteristics both optically and electrically, making it an ideal material for solar-blind polarization photodetectors. In this work, β-Ga2O3 epitaxial films were deposited on sapphire substrates with different orientations, and the mechanisms underlying the anisotropy of these epitaxial films were investigated. Compared to c-plane sapphire, the lattice mismatch between m- or r-plane sapphire and β-Ga2O3 is more pronounced, disrupting the rotational symmetry of the films and rendering them anisotropic. Thanks to the improved anisotropy, the polarization ratio of the photodetector based on β-Ga2O3 films grown on r-plane substrates is 0.24, nearly ten times higher than that on c-plane substrates. Finally, by utilizing these polarization-sensitive photodetectors, we developed an encrypted solar-blind ultraviolet optical communication system. Our work provides a new approach to facilitate the fabrication and application of high-performance polarization-sensitive solar-blind photodetectors.
Cited By
This article is cited by 3 publications.
- Manh Hoang Tran, Thi My Huyen Nguyen, Chung Wung Bark. All-Inorganic Nanocomposite Enhancing Photomultiplication for Sensitive and Stable Ultraviolet Detection. ACS Applied Electronic Materials 2024, Article ASAP.
- Wei Xu, Bei Li, Yutong Wu, Zhiyu Dong, Kun Zhang, Qingshan Wang, Shuanglong Feng, Wenqiang Lu. Ultrahigh Bipolar Photoresponse in a Self-Powered Ultraviolet Photodetector Based on GaN and In/Sn-Doped Ga2O3 Nanowires pn junction. ACS Applied Materials & Interfaces 2024, 16
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, 35303-35314. https://doi.org/10.1021/acsami.4c04812
- Xingyu Lu, Junyu Li, Yichi Zhang, Li Zhang, Huanyang Chen, Yousheng Zou, Haibo Zeng. Template-Confined Oriented Perovskite Nanowire Arrays Enable Polarization Detection and Imaging. ACS Applied Materials & Interfaces 2024, 16
(19)
, 24976-24986. https://doi.org/10.1021/acsami.4c04455
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