1. Mechanical properties of hexagonal silicon.
- Author
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Liang, Tao, Xiong, Lianghua, Lou, Hongbo, Lan, Fujun, Zhang, Junran, Liu, Ye, Li, Dongsheng, Zeng, Qiaoshi, and Zeng, Zhidan
- Subjects
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MANUFACTURING processes , *SILICON , *X-ray diffraction , *ELASTIC modulus , *OPTICAL properties - Abstract
Hexagonal silicon (Si-IV) has recently attracted considerable research interest due to its extraordinary optical properties and possibility to convert into a direct semiconductor under strain with great potential for applications. However, the mechanical properties of Si-IV, which are critical for its applications, have not been experimentally studied yet. In this study, combining nanoindentation and in situ high-pressure synchrotron X-ray diffraction, we thoroughly investigated the mechanical properties of Si-IV. The results suggest that the elastic moduli and hardness of Si-IV are close to those of the common diamond cubic silicon. The similar mechanical properties of Si-IV and diamond cubic silicon are beneficial for integrating Si-IV into conventional Si-based devices using similar industrial processing and for its photovoltaic and optoelectronic applications. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2022
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