4.5 Article

Improving the Short-Wavelength Spectral Response of Silicon Solar Cells by Spray Deposition of YVO4: Eu3+ Downshifting Phosphor Nanoparticles

期刊

IEEE JOURNAL OF PHOTOVOLTAICS
卷 5, 期 5, 页码 1373-1379

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2015.2438633

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Downshifting; phosphor nanoparticles; silicon solar cell; spray deposition

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Europium-doped yttrium vanadate downshifting phosphor nanoparticles (NPs) have been coated on top of monocrystalline silicon solar cells, having efficiency more than 15%, by a spray deposition technique. The effects of phosphor NPs on solar cells with antireflection coating (ARC) have been studied. The optimized quantity of phosphor NPs provides a photocurrent enhancement of similar to 2.1% for monosilicon solar cells. External quantum efficiency data of high-efficiency ARC layer-coated silicon solar cells conclusively show that the enhancement in short-wavelength spectral response is mainly due to downshifting effects of the phosphor NPs. A small increment in a long-wavelength spectral response is also observed due to the scattering effects of phosphor NPs, which also results in a small enhancement of effective diffusion length of minority carriers in the base region.

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