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

Journal Article · Mon Aug 18 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4893787· OSTI ID:22310914

Smith, Chris T. G.; Rhodes, Rhys W.; Beliatis, Michail J.; Rozanski, Lynn J.; Mills, Christopher A.; Silva, S. Ravi P., ^[1]

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1. Advanced Technology Institute, University of Surrey, Guildford GU2 7XH (United Kingdom)

Graphene oxide (GO) is becoming increasingly popular for organic electronic applications. We present large active area (0.64 cm{sup 2}), 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 C{sub 71} butyric acid methyl ester (PCDTBT:PC{sub 70}BM) 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.

• OSTI ID: 22310914
• Journal Information: Applied Physics Letters, Vol. 105, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BENCHMARKS
CONVERSION
EFFICIENCY
GRAPHENE
HOLE MOBILITY
HOLES
LAYERS
ORGANIC SOLAR CELLS
OXIDES
PHOTOVOLTAIC EFFECT
STABILITY