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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols

Cited 1936 times inthomson ciCited 1821 times inthomson ci
Title
Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols
Author
Peet, J.Kim, Jin YoungCoates, N. E.Ma, W. LMoses, D.Heeger, A. J.Bazan, G. C.
Keywords
PHOTOINDUCED ELECTRON-TRANSFER; DONOR-ACCEPTOR HETEROJUNCTIONS; PHOTOVOLTAIC CELLS; MORPHOLOGY; CONVERSION; NETWORK; BLENDS; C-60
Issue Date
200707
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE MATERIALS, v.6, no.7, pp.497 - 500
Abstract
High charge-separation efficiency combined with the reduced fabrication costs associated with solution processing and the potential for implementation on flexible substrates make 'plastic' solar cells a compelling option for tomorrow's photovoltaics. Attempts to control the donor/acceptor morphology in bulk heterojunction materials as required for achieving high power-conversion efficiency have, however, met with limited success. By incorporating a few volume per cent of alkanedithiols in the solution used to spin-cast films comprising a low-bandgap polymer and a fullerene derivative, the power-conversion efficiency of photovoltaic cells (air-mass 1.5 global conditions) is increased from 2.8% to 5.5% through altering the bulk heterojunction morphology. This discovery can potentially enable morphological control in bulk heterojunction materials where thermal annealing is either undesirable or ineffective.
URI
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DOI
http://dx.doi.org/10.1038/nmat1928
ISSN
1476-1122
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