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Author

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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Methodologies toward Highly Efficient Perovskite Solar Cells

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Title
Methodologies toward Highly Efficient Perovskite Solar Cells
Author
Seok, Sang IlGratzel, MichaelPark, Nam-Gyu
Issue Date
201805
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.14, no.20, pp.1704177 -
Abstract
A perovskite solar cell (PSC) employing an organic-inorganic lead halide perovskite light harvester, seeded in 2009 with power conversion efficiency (PCE) of 3.8% and grown in 2011 with PCE of 6.5% in dye-sensitized solar cell structure, has received great attention since the breakthrough reports approximate to 10% efficient solid-state PCSs demonstrating 500 h stability. Developments of device layout and high-quality perovskite film eventually lead to a PCE over 22%. As of October 31, 2017, the highest PCE of 22.7% is listed in an efficiency chart provided by NREL. In this Review, the methodologies to obtain highly efficient PSCs are described in detail. In order to achieve a PCE of over 20% reproducibly, key technologies are disclosed from the viewpoint of precursor solution chemistry, processing for defect-free perovskite films, and passivation of grain boundaries. Understanding chemical species in precursor solution, crystal growth kinetics, light-matter interaction, and controlling defects is expected to give important insights into not only reproducible production of high PCE over 20% but also further enhancement of the PCE of PCSs.
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DOI
http://dx.doi.org/10.1002/smll.201704177
ISSN
1613-6810
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