Journal ArticleDOI
Charge extraction analysis of charge carrier densities in a polythiophene/fullerene solar cell: Analysis of the origin of the device dark current
Christopher G. Shuttle,Andrea Maurano,Rick Hamilton,Brian C. O’Regan,J. C. de Mello,James R. Durrant +5 more
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In this paper, the authors demonstrate the use of a simple charge extraction measurement to determine the charge carrier densities n in annealed poly(3-hexylthiophene):methanofullerene solar cells under operating conditions.Abstract:
We demonstrate the use of a simple charge extraction measurement to determine the charge carrier densities n in annealed poly(3-hexylthiophene):methanofullerene solar cells under operating conditions. By applying charge extraction to the device under forward bias in the dark (Jdark), we find Jdark∝n2.6. This dependence on charge density is the same as that we find for bimolecular recombination losses observed in such devices under irradiation at open circuit, suggesting that the dark current originates from bimolecular recombination at the polymer/fullerene interface.read more
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Organic Optoelectronic Materials: Mechanisms and Applications
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Polymer solar cells with enhanced fill factors
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Open circuit voltage of organic solar cells: an in-depth review
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References
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Journal ArticleDOI
Morphology evolution via self-organization and lateral and vertical diffusion in polymer:fullerene solar cell blends.
Mariano Campoy-Quiles,Toby A. M. Ferenczi,Tiziano Agostinelli,Pablo G. Etchegoin,Youngkyoo Kim,Youngkyoo Kim,Thomas D. Anthopoulos,Paul N. Stavrinou,Donal D. C. Bradley,Jenny Nelson +9 more
TL;DR: This paper proposes a morphology evolution that consists of an initial crystallization of P3HT chains, followed by diffusion of PCBM molecules to nucleation sites, at which aggregates ofPCBM then grow.
Journal ArticleDOI
Experimental determination of the rate law for charge carrier decay in a polythiophene: Fullerene solar cell
Christopher G. Shuttle,Brian C. O’Regan,Amy M. Ballantyne,Jenny Nelson,Donal D. C. Bradley,J. C. de Mello,James R. Durrant +6 more
TL;DR: In this paper, transient photovoltage and differential charging experiments, complemented by transient absorption data, were used to determine charge carrier lifetimes and densities in a poly(3-hexylthiophene): methanofullerene solar cell at Voc as a function of white light bias intensity.
Journal ArticleDOI
Bimolecular recombination losses in polythiophene: Fullerene solar cells
Christopher G. Shuttle,Brian C. O’Regan,Amy M. Ballantyne,Jenny Nelson,Donal D. C. Bradley,James R. Durrant +5 more
TL;DR: In this paper, transient absorption spectroscopy is employed to monitor charge carrier decay dynamics in an annealed poly(3-hexylthiophene): methanofullerene solar cell.