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Tvingstedt K, Vandewal K, Gadisa A, et al. Electroluminescence from charge transfer states in polymer solar cells. J Am Chem Soc. 2009;131(33):11819-24doi: 10.1021/ja903100p.
Tvingstedt, K., Vandewal, K., Gadisa, A., Zhang, F., Manca, J., & Inganäs, O. (2009). Electroluminescence from charge transfer states in polymer solar cells. Journal of the American Chemical Society, 131(33), 11819-24. https://doi.org/10.1021/ja903100p
Tvingstedt, Kristofer, et al. "Electroluminescence from charge transfer states in polymer solar cells." Journal of the American Chemical Society vol. 131,33 (2009): 11819-24. doi: https://doi.org/10.1021/ja903100p
Tvingstedt K, Vandewal K, Gadisa A, Zhang F, Manca J, Inganäs O. Electroluminescence from charge transfer states in polymer solar cells. J Am Chem Soc. 2009 Aug 26;131(33):11819-24. doi: 10.1021/ja903100p. PMID: 19722595.
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J Am Chem Soc. 2009 Aug 26;131(33):11819-24. doi: 10.1021/ja903100p.

Electroluminescence from charge transfer states in polymer solar cells.

Journal of the American Chemical Society

Kristofer Tvingstedt, Koen Vandewal, Abay Gadisa, Fengling Zhang, Jean Manca, Olle Inganäs

Affiliations

  1. Biomolecular and Organic Electronics, Center of Organic Electronics, Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden. [email protected]

PMID: 19722595 DOI: 10.1021/ja903100p

Abstract

In this article we report the weak but omnipresent electroluminescence (EL) from several types of organic polymer:fullerene bulk heterojunction solar cells biased in the forward direction. The light emitted from blends of some commonly used polymers and the fullerene molecule is significantly different from that of any of the pure materials comprising the blend. The lower energy of the blend EL is found to correlate with both the voltage onset of emission and the open-circuit voltage of the photovoltaic cell under solar illumination. We accordingly interpret the emission to originate from interfacial charge transfer state recombination and emphasize EL as a very valuable tool to characterize the charge transfer state present in donor/acceptor organic photovoltaic (OPV) cells.

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