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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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Efficient tandem polymer solar cells fabricated by all-solution processing

Cited 2119 times inthomson ciCited 799 times inthomson ci
Title
Efficient tandem polymer solar cells fabricated by all-solution processing
Author
Kim, Jin YoungLee, KwangheeCoates, Nelson E.Moses, DanielNguyen, Thuc-QuyenDante, MarkHeeger, Alan J.
Keywords
PHOTOVOLTAIC CELLS; HETEROJUNCTIONS; PERFORMANCE; NETWORK; BLENDS
Issue Date
200707
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v.317, no.5835, pp.222 - 225
Abstract
Tandem solar cells, in which two solar cells with different absorption characteristics are linked to use a wider range of the solar spectrum, were fabricated with each layer processed from solution with the use of bulk heterojunction materials comprising semiconducting polymers and fullerene derivatives. A transparent titanium oxide ( TiOx) layer separates and connects the front cell and the back cell. The TiOx layer serves as an electron transport and collecting layer for the first cell and as a stable foundation that enables the fabrication of the second cell to complete the tandem cell architecture. We use an inverted structure with the low band-gap polymer-fullerene composite as the charge-separating layer in the front cell and the high band-gap polymer composite as that in the back cell. Power-conversion efficiencies of more than 6% were achieved at illuminations of 200 milliwatts per square centimeter.
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DOI
http://dx.doi.org/10.1126/science.1141711
ISSN
0036-8075
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