Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7119702 | Materials Science in Semiconductor Processing | 2014 | 6 Pages |
Abstract
The effect of alkali treatment of Si nanowires (SiNWs) on the spectral response of solar cells was investigated using monochromatic incident photon-to-electron conversion efficiency spectroscopy. SiNWs were prepared on a substrate by metal-assisted etching and were then treated with NaOH/isopropanol. The results show that alkali treatment of SiNWs for 30Â s obviously improved the cell conversion efficiency. This was attributed to enhancement of the red light response and a decrease in surface reflectivity from 6% to ~2%. However, SiNW alkali treatment led to poor blue light response, which is a major limiting factor for efficient SiNW solar cells. To improve the photovoltaic properties of SiNW cells, a near-complete response over the whole solar spectrum is essential.
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Authors
Yurong Jiang, Ruiping Qin, Meng Li, Guangna Wang, Heng Ma, Fanggao Chang,