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Seok, Sang Il
Laboratory for Energy Harvesting Materials and Systems (LEHMS)
Research Interests
  • Solar energy conversion, perovskite solar cells, inorganic-organic hybrid materials and processing, solution chemistry

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Spectral splitting photovoltaics using perovskite and wideband dye-sensitized solar cells

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Title
Spectral splitting photovoltaics using perovskite and wideband dye-sensitized solar cells
Author
Kinoshita, TakumiNonomura, KazuteruJeon, Nam JoongGiordano, FabrizioAbate, AntonioUchida, SatoshiKubo, TakayaSeok, Sang IlNazeeruddin, Mohammad KhajaHagfeldt, AndersGrätzel, MichaelSegawa, Hiroshi
Issue Date
2015-11
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.6, pp.8834
Abstract
The extension of the light absorption of photovoltaics into the near-infrared region is important to increase the energy conversion efficiency. Although the progress of the lead halide perovskite solar cells is remarkable, and high conversion efficiency of >20% has been reached, their absorption limit on the long-wavelength side is similar to 800 nm. To further enhance the conversion efficiency of perovskite-based photovoltaics, a hybridized system with near-infrared photovoltaics is a useful approach. Here we report a panchromatic sensitizer, coded DX3, that exhibits a broad response into the near-infrared, up to similar to 1100 nm, and a photocurrent density exceeding 30 mA cm(-2) in simulated air mass 1.5 standard solar radiation. Using the DX3-based dye-sensitized solar cell in conjunction with a perovskite cell that harvests visible light, the hybridized mesoscopic photovoltaics achieved a conversion efficiency of 21.5% using a system of spectral splitting.
URI
https://scholarworks.unist.ac.kr/handle/201301/17895
URL
http://www.nature.com/ncomms/2015/151105/ncomms9834/full/ncomms9834.html
DOI
10.1038/ncomms9834
ISSN
2041-1723
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ECHE_Journal Papers
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