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Optimum mobility, contact properties, and open-circuit voltage of organic solar cells: A drift-diffusion simulation study

Abstract:

We investigate the role charge carrier mobility plays for loss mechanisms in organic bulk heterojunction solar cells. For this purpose, we perform drift-diffusion calculations for several recombination models and properties of the contacts. We show that in case of selective contacts, higher mobilities increase device efficiency, independent of injection barrier heights, energy level bending at the contacts, and the amount of background dark carriers in the device. Nonselective contacts provid...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevB.85.155201

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review B - Condensed Matter and Materials Physics Journal website
Volume:
85
Issue:
15
Publication date:
2012-04-04
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:3c8580d1-c024-49fd-ac79-9272362c8c3d
Source identifiers:
405347
Local pid:
pubs:405347
Language:
English

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