Journal
NANO ENERGY
Volume 15, Issue -, Pages 729-736Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2015.06.001
Keywords
Solar concentrator; Flexible Electronics; Waveguide; Luminescence; Photovoltaics
Categories
Funding
- Ministry of Science and Technology [MOST 103 2218-E-009-034-MY3, MOST 102-2221-E-009-130-MY3, MOST 101-2628-E-009-008-MY3]
- Ministry of Education of Taiwan (through the ATU program)
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Luminescent solar concentrators have received renewed interest because they can harvest solar radiation without the need for expensive tacking systems. In this work, highly efficient luminescent waveguiding photovoltaic devices exhibiting mechanical flexibility and solar concentration ability have been prepared by integrating Si solar cells with soft polydimethylsiloxane (PDMS) waveguides. We observed that segregated dyes in the PDMS waveguides induce strong scattering effects in the long-wavelength range. The scattered photons were transported effectively to the solar cells, leading to high power conversion efficiencies (PCEs). A single module exhibited a remarkable power conversion efficiency of 4.62 +/- 0.02%. After stacking two waveguides, we achieved PCEs as high as 5.23 +/- 0.01%, with a projected PCE approaching 12%. (C) 2015 Elsevier Ltd. All rights reserved.
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