Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon
This work simulates the morphological evolution process of the solidification interface of silicon crystal. Based on the phase field model of single dendrite growth of pure material in a single-phase system, the control equation of the phase field is re-optimized, and an interface free energy anisot...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/9/1271 |
| _version_ | 1797489658866696192 |
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| author | Dianxi Zhang Xiufan Yang Huaizhi Wang Qingjiang Song |
| author_facet | Dianxi Zhang Xiufan Yang Huaizhi Wang Qingjiang Song |
| author_sort | Dianxi Zhang |
| collection | DOAJ |
| description | This work simulates the morphological evolution process of the solidification interface of silicon crystal. Based on the phase field model of single dendrite growth of pure material in a single-phase system, the control equation of the phase field is re-optimized, and an interface free energy anisotropy equation that can simulate the competitive growth of multiple crystal grains is established. The competitive growth of polysilicon is then simulated and analyzed. The results show that when the degree of undercooling exceeds a certain value, the non-facet crystals are transformed into facet crystals. The main branches in each direction are relatively thick when the anisotropy is small. With increasing anisotropy, the main branches in each direction show gradual thinning, and edges and corners appear on the interface. The dendrites are no longer smooth, and they transform from non-facet crystals to facet crystals. The main branches of different grains inhibit each other when multiple crystal grains compete for growth. The growth of the main branches is curved, which is different from existing branches. The experimental results can more realistically simulate the evolution process of single-crystal silicon and polycrystalline silicon crystal micromorphology. |
| first_indexed | 2024-03-10T00:19:46Z |
| format | Article |
| id | doaj.art-58a8c175a2904b01a18c3967ad7d8888 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T00:19:46Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-58a8c175a2904b01a18c3967ad7d88882023-11-23T15:44:17ZengMDPI AGCrystals2073-43522022-09-01129127110.3390/cryst12091271Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline SiliconDianxi Zhang0Xiufan Yang1Huaizhi Wang2Qingjiang Song3College of Physics and Electronic Science, Anshun University, Anshun 561000, ChinaCollege of Physics and Electronic Science, Anshun University, Anshun 561000, ChinaSchool of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaCollege of Physics and Electronic Science, Anshun University, Anshun 561000, ChinaThis work simulates the morphological evolution process of the solidification interface of silicon crystal. Based on the phase field model of single dendrite growth of pure material in a single-phase system, the control equation of the phase field is re-optimized, and an interface free energy anisotropy equation that can simulate the competitive growth of multiple crystal grains is established. The competitive growth of polysilicon is then simulated and analyzed. The results show that when the degree of undercooling exceeds a certain value, the non-facet crystals are transformed into facet crystals. The main branches in each direction are relatively thick when the anisotropy is small. With increasing anisotropy, the main branches in each direction show gradual thinning, and edges and corners appear on the interface. The dendrites are no longer smooth, and they transform from non-facet crystals to facet crystals. The main branches of different grains inhibit each other when multiple crystal grains compete for growth. The growth of the main branches is curved, which is different from existing branches. The experimental results can more realistically simulate the evolution process of single-crystal silicon and polycrystalline silicon crystal micromorphology.https://www.mdpi.com/2073-4352/12/9/1271phase field methodmonocrystalline siliconpolycrystalline siliconpreferred directioncompetitive growth |
| spellingShingle | Dianxi Zhang Xiufan Yang Huaizhi Wang Qingjiang Song Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon Crystals phase field method monocrystalline silicon polycrystalline silicon preferred direction competitive growth |
| title | Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon |
| title_full | Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon |
| title_fullStr | Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon |
| title_full_unstemmed | Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon |
| title_short | Phase Field Simulation Research on the Microstructural Evolution of Monocrystalline and Polycrystalline Silicon |
| title_sort | phase field simulation research on the microstructural evolution of monocrystalline and polycrystalline silicon |
| topic | phase field method monocrystalline silicon polycrystalline silicon preferred direction competitive growth |
| url | https://www.mdpi.com/2073-4352/12/9/1271 |
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