Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 125, Issue -, Pages 248-252Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2014.03.026
Keywords
Well-separated SiNWs; Antireflection property; Conformal coating; Supercritical drying
Funding
- National Natural Science Foundation of China [61106011, 11374015]
- Anhui Province Natural Science Foundation [1308085QF109]
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Large-area, well-separated, and vertically aligned silicon nanowire (SiNW) arrays with excellent antireflection properties were fabricated through a combination of anodic aluminum oxide template and metal-assisted chemical etching, followed by supercritical drying. Less than 1% reflectance was achieved over the wavelength range of 200-600 nm, and 23% reduction in average reflectance was observed over the 200-1000 nm range, compared with the conical-frustum structure array by natural drying. Furthermore, the well-separated SiNW arrays considerably facilitated the conformal coating of the plasma-enhanced chemical vapor deposited amorphous silicon layer on the SiNW surface, which could result in effective passivation of surface states. Therefore, such well-separated and vertically aligned SiNVV arrays are highly promising for solar cell application. (C) 2014 Elsevier B.V. All rights reserved.
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