摘要
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、氩气流动状态、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。
Ingot grain size,crystal defect,internal stress,formation and distribution of impurity which control photoelectric conversion efficiencies for multi-crystalline silicon solar cell are closely related to the temperature field in directional solidification process.Consequently,control and optimization of temperature field in directional solidification process is the most advantageous to improve quality of multi-crystalline silicon ingot.The temperature field of directional solidification of multi-crystalline silicon is analyzed with the widely used numerical simulation technique by domestic and foreign scholars,and the simulation results have important reference value.The relationship between multi-crystalline silicon ingot defect and temperature field is analyzed by author who is based on the own work.The influence of thermal conductivity,heating power,argon flow state,external magnetic field and directional solidification system structure on temperature field is summarized which will provide reference for improving preparation and quality of multi-crystalline silicon ingot.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第11期22-26,共5页
Materials Reports
关键词
多晶硅
定向凝固
温度场
数值模拟
multi-crystalline silicon
directional solidification
temperature field
numerical simulation
