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薄膜太阳电池系列讲座(5) 碲化镉(CdTe)薄膜太阳电池及其光学检测(下)

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摘要 图4碲化镉薄膜的生长条件除了氩气压强在2.5~50mTorr范围内变化外,其他沉积条件都保持一样。从图中可以看到:(1)所有薄膜在沉积初期(体层1~2nm厚)都有相对较厚的表面粗糙层。这时沉积下来的碲化镉容易聚成“岛”状而不是平铺成层状,“岛”的高度随氩气压强增加而单调增加;(2)体层厚度2~10nm之间,上述分离的岛状沉积体扩大后相互接触,底部变成了连贯的体层,因此表面粗糙层厚度降低;
作者 李剑
出处 《太阳能》 2011年第19期10-11,16,共3页 Solar Energy
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