| CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
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First-principles study of a new BP2 two-dimensional material |
| Zhizheng Gu(顾志政)1,†, Shuang Yu(于爽)1,†, Zhirong Xu(徐知荣)1,†, Qi Wang(王琪)1,†, Tianxiang Duan(段天祥)1,†, Xinxin Wang(王鑫鑫)1, Shijie Liu(刘世杰)1,2,‡, Hui Wang(王辉)1,§, and Hui Du(杜慧)1,¶ |
1 Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China;
2 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China |
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Abstract Two-dimensional materials have a wide range of applications in many aspects due to their unique properties. Here we carry out a detailed structural search and design of the BP2 using the first principles method, and find a new PMM2 sheet. The analysis of the phonon dispersive curves shows that the 2D PMM2 is dynamic stable. The study of molecular dynamics shows that the 2D PMM2 can be stable under high temperature, even at 600 K. Most importantly, when a suitable strain is applied, the structure can exhibit other electronic properties such as direct band gap semiconductor. In addition, the small strain can tune the band gap value of the PMM2 structure to around 1.4 eV, which is very close to the ideal band gap of solar materials. Therefore, the 2D PMM2 may have potential applications in the field of photovoltaic materials.
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Received: 15 January 2022
Revised: 27 February 2022
Accepted manuscript online: 03 March 2022
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PACS:
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61.82.Fk
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(Semiconductors)
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68.65.-k
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(Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties)
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71.15.Mb
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(Density functional theory, local density approximation, gradient and other corrections)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12004102 and 11847094), the China Postdoctoral Science Foundation (Grant No. 2020M670836), the Open Project of State Key Laboratory of Superhard Materials in Jilin University (Grant No. 201703), and Student Research Training Program of Henan University of Science and Technology (Grant No. WLSRTP202118). |
Corresponding Authors:
Shijie Liu, Hui Wang, Hui Du
E-mail: liusj0228@163.com;wanghui08@haust.edu.cn;duhui0207@163.com
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Cite this article:
Zhizheng Gu(顾志政), Shuang Yu(于爽), Zhirong Xu(徐知荣), Qi Wang(王琪), Tianxiang Duan(段天祥), Xinxin Wang(王鑫鑫), Shijie Liu(刘世杰), Hui Wang(王辉), and Hui Du(杜慧) First-principles study of a new BP2 two-dimensional material 2022 Chin. Phys. B 31 086107
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