Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 95, Issue 8, Pages 2540-2544Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2011.03.006
Keywords
Nanoparticle; Anti-reflection; Solar cell; External quantum efficiency
Funding
- Bureau of Energy in Taiwan
- National Science Council of Republic of China [NSC 99-2119-M-009-004-MY3]
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In this study, silica nanospheres dispersed in a surfactant solution were spin-coated on commercially available silicon solar cells to form colloidal crystals on the surface. This self-assembled nanoparticle layer served as an anti-reflection (AR) layer for solar cell devices. The self-assembled layer exhibits excellent anti-reflection properties in the UV and NIR wavelength regions, and the reflectance spectra match the theoretical prediction done using the rigorous coupled-wave analysis model. We also showed that the overall conversion efficiency of polycrystalline Si solar cells coated with the silica nanospheres was increased from 11% to 12.3% when using optimized spin-coating parameters and nanoparticle concentrations. (C) 2011 Elsevier B.V. All rights reserved.
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