Recombination pathways in polymer:fullerene photovoltaics observed through spin polarization measurements

Etherington, Marc K.; Wang, Jianpu; Chow, Philip C.Y.; Greenham, Neil C.

doi:10.1063/1.4865203

Recombination pathways in polymer:fullerene photovoltaics observed through spin polarization measurements

Etherington, Marc K.; Wang, Jianpu; Chow, Philip C.Y.; Greenham, Neil C.

Authors

Marc K. Etherington

Jianpu Wang

Philip C.Y. Chow

Neil C. Greenham

Abstract

We report magnetoconductance measurements on polymer:fullerene photovoltaic devices in the regime of high fields and low temperatures, where spin polarization of injected carriers plays an important role. The current either decreases or increases with magnetic field, depending on whether the interfacial charge-transfer state lies above or below the intramolecular triplet state in energy. Rapid transitions from triplet charge-transfer states to lower-lying triplet excitons constitute an important loss mechanism that is responsible for the negative magnetoconductance observed.

Citation

Etherington, M. K., Wang, J., Chow, P. C., & Greenham, N. C. (2014). Recombination pathways in polymer:fullerene photovoltaics observed through spin polarization measurements. Applied Physics Letters, 104(6), Article 063304. https://doi.org/10.1063/1.4865203

Journal Article Type	Article
Acceptance Date	Jan 22, 2014
Online Publication Date	Feb 12, 2014
Publication Date	Feb 12, 2014
Deposit Date	Nov 2, 2015
Publicly Available Date	Jun 26, 2018
Journal	Applied Physics Letters
Print ISSN	0003-6951
Electronic ISSN	1077-3118
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	104
Issue	6
Article Number	063304
DOI	https://doi.org/10.1063/1.4865203

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Copyright Statement
© 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Etherington, Marc K., Wang, Jianpu, Chow, Philip C. Y. & Greenham, Neil C. (2014). Recombination pathways in polymer:fullerene photovoltaics observed through spin polarization measurements. Applied Physics Letters 104(6): 063304 and may be found at https://doi.org/10.1063/1.4865203