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Advanced Materials

Exciton Dissociation and Charge-Transport Enhancement in Organic Solar Cells with Quantum-Dot/N-doped CNT Hybrid Nanomaterials

Authors

  • Ju Min Lee,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Byoung-Hwa Kwon,

    1. Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Hyung Il Park,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
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  • Hoyeon Kim,

    1. Department of Electrical Engineering, KAIST, Daejeon, 305-701, Republic of Korea
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  • Min Gyu Kim,

    1. Pohang Accelerator Laboratory (PAL), Pohang 790-784, Republic of Korea
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  • Ji Sun Park,

    1. Energy Nano Materials Research Center, Korea Electronics Technology Institute (KETI), Seongnam, 463-816, Republic of Korea
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  • E Su Kim,

    1. Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
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  • Seunghyup Yoo,

    1. Department of Electrical Engineering, KAIST, Daejeon, 305-701, Republic of Korea
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  • Duk Young Jeon,

    Corresponding author
    1. Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
    • Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea.
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  • Sang Ouk Kim

    Corresponding author
    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
    • Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Department of Materials Science and Engineering, KAIST, Daejeon, 305-701, Republic of Korea
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Abstract

The incorporation of InP quantum-dot/N-doped multiwalled carbon nanotube (QD:NCNT) nanohybrids in the active layer of poly(3-hexylthiophene)/indene−C60 bisadduct (P3HT/ICBA) bulk-heterojuction solar cells enhances VOC and JSC. The QDs encourage exciton dissociation by promoting electron transfer, while the NCNTs enhance the transport of the separated electrons and eventual charge collection. Such a synergistic effect successfully improves the power conversion efficiency (PCE) from 4.68% (reference cells) to 6.11%.

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