کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
80478 | 49387 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Characteristics of vapor–liquid–solid grown silicon nanowire solar cells Characteristics of vapor–liquid–solid grown silicon nanowire solar cells](/preview/png/80478.png)
We report fabrication and characterization of solar cells based on vapor–liquid–solid (VLS) grown silicon nanowires (NWs) that form core–shell radial p–n junction structures. We observe efficiency enhancement due to the presence of the NWs that increase the light trapping within the device, while the use of gold as VLS catalyst results in increased carrier recombination within the wires. From the spectral efficiency data, we identify that the surface recombination effect becomes more significant in the large surface area NW cells. To remedy this issue we demonstrate the efficacy of a highly conformal Al2O3 film grown by atomic layer deposition to serve as surface passivation layer. This work highlights the key issues confronted by NW-based solar cells grown by VLS technique.
Journal: Solar Energy Materials and Solar Cells - Volume 93, Issue 8, August 2009, Pages 1388–1393