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采用射频等离子体增强化学气相沉积(RFPECVD)法制备了不同硼烷掺杂比例的微晶硅薄膜.随后在不同温度、不同气氛下,对沉积得到的P型微晶硅薄膜进行了退火处理.研究发现,对初始晶化率较高的薄膜,退火后其晶化率发生下降;初始晶化率较低的薄膜,退火后其晶化率则有所提高;并且,在高真空中退火更有利于薄膜的晶化.退火后,薄膜表面粗糙度的变化情况受其初始晶化率的影响;薄膜的暗电导率有大幅度的增加.其中,掺杂浓度较高的薄膜,在真空退火后其晶化率、表面粗糙度和电导都有显著的提高.

参考文献

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