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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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Electroluminescence in polymer-fullerene photovoltaic cells

Cited 46 times inthomson ciCited 40 times inthomson ci
Title
Electroluminescence in polymer-fullerene photovoltaic cells
Author
Kim, HKim, Jin YoungPark, SHLee, KJin, YKim, JSuh, H
Keywords
PHOTOINDUCED ELECTRON-TRANSFER; PLASTIC SOLAR-CELLS; PHOTOEXCITATION SPECTROSCOPY; COMPOSITES; DEVICES; PERFORMANCE; MORPHOLOGY; BLENDS
Issue Date
2005-05
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.86, no.18, pp.1 - 3
Abstract
We report electroluminescence (EL) in photovoltaic (PV) cells based on semiconducting polymer-fullerene composites. By applying a forward bias to the PV cells, the devices exhibited a clear EL action with a peak around 1.5 eV. We ascribe this peak to an "electric field-assisted exciplex" formed between the electrons in the fullerenes and the holes in the polymers, thereby resulting in radiative recombination in the composites. This finding is totally unexpected because of a strong photoluminescence quenching in the same materials. Since the same devices also showed typical photovoltaic effects under illumination, our results demonstrate a dual functionality in one device; polymer photovoltaic cells and polymer light-emitting diodes.
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DOI
10.1063/1.1924869
ISSN
0003-6951
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ECHE_Journal Papers
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