کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
80501 | 49388 | 2009 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Structural defects caused by a rough substrate and their influence on the performance of hydrogenated nano-crystalline silicon n–i–p solar cells Structural defects caused by a rough substrate and their influence on the performance of hydrogenated nano-crystalline silicon n–i–p solar cells](/preview/png/80501.png)
We present a cross-sectional transmission electron microscopy study of a set of hydrogenated nano-crystalline silicon n–i–p solar cells deposited by hot-wire chemical vapour deposition on Corning glass substrates coated with ZnO-covered Ag layers with various surface roughnesses. Strip-like structural defects (voids and low-density areas) are observed in the silicon layers originating from micro-valleys of Ag grains. A correlation between the opening angles of the textured surface and the appearance of these strips was found. We propose that in order to grow high-quality hydrogenated nano-crystalline silicon absorber layers for solar cell applications, the morphology of the Ag surface is a critical property, and the micro-valleys at the ZnO surface with an opening angle smaller than around 110° should be avoided.
Journal: Solar Energy Materials and Solar Cells - Volume 93, Issue 3, March 2009, Pages 338–349