Publikation:

Self-Organized Discotic Liquid Crystals for High-Efficiency Organic Photovoltaics

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2001

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Fechtenkötter, Andreas
Müllen, Klaus
Moons, Ellen
Friend, Richard H.
MacKenzie, J. D.

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Science. 2001, 293(5532), pp. 1119-1122. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.293.5532.1119

Zusammenfassung

Self-organization of liquid crystalline and crystalline-conjugated materials has been used to create, directly from solution, thin films with structures optimized for use in photodiodes. The discotic liquid crystal hexa-peri-hexabenzocoronene was used in combination with a perylene dye to produce thin films with vertically segregated perylene and hexabenzocoronene, with large interfacial surface area. When incorporated into diode structures, these films show photovoltaic response with external quantum efficiencies of more than 34 percent near 490 nanometers. These efficiencies result from efficient photoinduced charge transfer between the hexabenzocoronene and perylene, as well as from effective transport of charges through vertically segregated perylene and hexabenzocoronene pi systems. This development demonstrates that complex structures can be engineered from novel materials by means of simple solution-processing steps and may enable inexpensive, high-performance, thin-film photovoltaic technology.

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ISO 690SCHMIDT-MENDE, Lukas, Andreas FECHTENKÖTTER, Klaus MÜLLEN, Ellen MOONS, Richard H. FRIEND, J. D. MACKENZIE, 2001. Self-Organized Discotic Liquid Crystals for High-Efficiency Organic Photovoltaics. In: Science. 2001, 293(5532), pp. 1119-1122. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.293.5532.1119
BibTex
@article{SchmidtMende2001-08-10SelfO-25184,
  year={2001},
  doi={10.1126/science.293.5532.1119},
  title={Self-Organized Discotic Liquid Crystals for High-Efficiency Organic Photovoltaics},
  number={5532},
  volume={293},
  issn={0036-8075},
  journal={Science},
  pages={1119--1122},
  author={Schmidt-Mende, Lukas and Fechtenkötter, Andreas and Müllen, Klaus and Moons, Ellen and Friend, Richard H. and MacKenzie, J. D.}
}
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