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☃︎𖠰ᎷᎬᎡ͙ᎡᎽ ✦ CᎻᏒᎥᏚᎢ͙ᎷᎪᏚ𖠰☃︎
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1. N型掺杂:在PECVD沉积过程中,向硅烷(SiH₄)中掺入磷烷(PH₃),磷原子提供电子形成N型。
2. P型掺杂:掺入乙硼烷(B₂H₆)等含硼气体,硼原子提供空穴形成P型。
3. 关键处理:需同步进行氢钝化(形成a-Si:H),以中和悬键缺陷,保证掺杂有效性。
该方法主要用于薄膜太阳能电池(PIN结构)和薄膜晶体管等器件。