Paper
6 August 2023 Study on strain effects on the electronic and optical properties of hexagonal boron phosphide monolayer
Yong Zhou, Beitong Chen, Xingyong Huang, Ruomei Jiang, Xule Wang, Xiumin Xie, Qiang Xu, Weiying Hu, Wei Zhang, Hai-Zhi Song
Author Affiliations +
Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 127810X (2023) https://doi.org/10.1117/12.2687026
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China
Abstract
Two-dimensional III-V binary compounds are considered as high-performance optoelectronic materials due to their tunable bandgap and unique photoelectric properties. In this research, the effects of strain engineering on the electronic properties and optical properties of hexagonal boron phosphide monolayer have been systematically studied by using first principles calculations. The bandgap is enlarged monotonously while the direct bandgap character remains as the strain increases from -10% (compression) to +10% (tension), suggesting its application prospect in flexible electronics. Interestingly, the hexagonal boron phosphide monolayer exhibits a large optical absorption coefficient in both visible and ultraviolet regions and could reach 1.3 × 106 cm-1 in ultraviolet region. As compressive strain gets larger, the main peak of dielectric function as well as the edge of optical absorption appear redshift. In addition, the absorption spectrum broadens in visible light region and the light absorption intensity becomes larger in ultraviolet range with increasing compressive strain. The calculated optical properties prove that hexagonal boron phosphide monolayer is a suitable material as ultraviolet-visible dual band photodetectors and a potential auxiliary material for quantum cutting.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yong Zhou, Beitong Chen, Xingyong Huang, Ruomei Jiang, Xule Wang, Xiumin Xie, Qiang Xu, Weiying Hu, Wei Zhang, and Hai-Zhi Song "Study on strain effects on the electronic and optical properties of hexagonal boron phosphide monolayer", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 127810X (6 August 2023); https://doi.org/10.1117/12.2687026
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KEYWORDS
Monolayers

Optical properties

Dielectrics

Electrical properties

Boron

Ultraviolet radiation

Absorption spectrum

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