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Interplay of Optical, Morphological, and Electronic Effects of ZnO Optical Spacers in Highly Efficient Polymer Solar Cells

Ben Dkhil, Sadok (author)
Aix Marseille University, France
Duche, David (author)
University of Toulon and Var, France
Gaceur, Meriem (author)
Aix Marseille University, France
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Thakur, Anil K. (author)
Aix Marseille University, France
Bencheikh Aboura, Fatima (author)
University of Toulon and Var, France
Escoubas, Ludovic (author)
University of Toulon and Var, France
Simon, Jean-Jacques (author)
University of Toulon and Var, France
Guerrero, Antonio (author)
University of Jaume 1, Spain
Bisquert, Juan (author)
University of Jaume 1, Spain; King Abdulaziz University, Saudi Arabia
Garcia-Belmonte, Germa (author)
University of Jaume 1, Spain
Bao, Qinye (author)
Linköpings universitet,Ytors Fysik och Kemi,Tekniska högskolan
Fahlman, Mats (author)
Linköpings universitet,Ytors Fysik och Kemi,Tekniska högskolan
Videlot-Ackermann, Christine (author)
Aix Marseille University, France
Margeat, Olivier (author)
Aix Marseille University, France
Ackermann, Joerg (author)
Aix Marseille University, France
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 (creator_code:org_t)
2014-08-13
2014
English.
In: Advanced Energy Materials. - : Wiley-VCH Verlag. - 1614-6832 .- 1614-6840. ; 4:18, s. 1400805-
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Optical spacers based on metal oxide layers have been intensively studied in poly(3-hexylthiophene) (P3HT) based polymer solar cells for optimizing light distribution inside the device, but to date, the potential of such a metal oxide spacer to improve the electronic performance of the polymer solar cells simultaneously has not yet be investigated. Here, a detailed study of performance improvement in high efficient polymer solar cells by insertion of solution-processed ZnO optical spacer using ethanolamine surface modification is reported. Insertion of the modified ZnO optical spacer strongly improves the performance of polymer solar cells even in the absence of an increase in light absorption. The electric improvements of the device are related to improved electron extraction, reduced contact barrier, and reduced recombination at the cathode. Importantly, it is shown for the first time that the morphology of optical spacer layer is a crucial parameter to obtain highly efficient solar cells in normal device structures. By optimizing optical spacer effects, contact resistance, and morphology of ZnO optical spacers, poly[[4,8-bis[(2-ethylhexyl) oxy] benzo[1,2-b: 4,5-b] dithiophene-2,6diyl] [3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno[3,4-b] thiophenediyl]] (PTB7):[6,6]-phenyl-C71-butyric acid (PC70 BM) bulk heterojunction solar cells with conversion efficiency of 7.6% are obtained in normal device structures with all-solution-processed interlayers.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Publication and Content Type

ref (subject category)
art (subject category)

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