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Advanced Materials

Hole and Electron Extraction Layers Based on Graphene Oxide Derivatives for High-Performance Bulk Heterojunction Solar Cells

Authors

  • Jun Liu,

    1. Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular, Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
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  • Yuhua Xue,

    1. Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular, Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
    2. Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology & Optometry, Wenzhou Medical College, Zhejiang 325027, China
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  • Yunxiang Gao,

    1. Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular, Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
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  • Dingshan Yu,

    1. Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular, Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
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  • Michael Durstock,

    1. Materials and Manufacturing Directorate, Air Force Research Laboratory, RXBP, Wright-Patterson Air Force Base, Ohio 45433, USA
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  • Liming Dai

    Corresponding author
    1. Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular, Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
    • Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular, Science and Engineering, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA.
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Abstract

By charge neutralization of carboxylic acid groups in graphene oxide (GO) with Cs2CO3 to afford Cesium-neutralized GO (GO-Cs), GO derivatives with appropriate modification are used as both hole- and electron-extraction layers for bulk heterojunction (BHJ) solar cells. The normal and inverted devices based on GO hole- and GO-Cs electron-extraction layers both outperform the corresponding standard BHJ solar cells.

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