Institut for Forretningsudvikling og Teknologi

Graphene oxide hole transport layers for large area, high efficiency organic solar cells

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  • Chris T G Smith, University of Surrey, UK
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  • Rhys W. Rhodes, University of Surrey, UK
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  • Michail J. Beliatis
  • K. D G Imalka Jayawardena, University of Surrey, UK
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  • Lynn J. Rozanski, University of Surrey, UK
  • ,
  • Christopher A. Mills, University of Surrey, UK
  • ,
  • S. Ravi P. Silva, University of Surrey, UK

Graphene oxide (GO) is becoming increasingly popular for organic electronic applications. We present large active area (0.64 cm2), solution processable, poly[[9-(1-octylnonyl)-9H-carbazole-2,7-diyl]-2,5-thiophenediyl-2, 1,3-benzothiadiazole-4,7-diyl-2,5-thiophenediyl]:[6,6]-Phenyl C71 butyric acid methyl ester (PCDTBT:PC70BM) organic photovoltaic (OPV) solar cells, incorporating GO hole transport layers (HTL). The power conversion efficiency (PCE) of ∼5% is the highest reported for OPV using this architecture. A comparative study of solution-processable devices has been undertaken to benchmark GO OPV performance with poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) HTL devices, confirming the viability of GO devices, with comparable PCEs, suitable as high chemical and thermal stability replacements for PEDOT:PSS in OPV.

TidsskriftApplied Physics Letters
StatusUdgivet - 18 aug. 2014
Eksternt udgivetJa

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