对多晶硅太阳能电池而言,决定其光电转化效率的铸锭晶粒尺寸、晶体缺陷、内应力及杂质的形成与分布等与定向凝固过程的温度场密切相关.因此,为提高多晶硅锭质量必须控制和优化定向凝固过程的温度场.运用数值模拟技术对多晶硅定向凝固温度场进行分析,已被国内外学者广泛应用,获得了有参考价值的模拟结果.结合自身工作,综合分析了多晶硅铸锭缺陷与温度场的关系,总结了多晶硅定向凝固数值模拟中,热导率、加热功率、氢气流动状态、外加磁场及定向凝固系统结构等对温度场的影响,可为多晶硅铸锭的制备及质量改进提供参考.
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