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首页> 外文期刊>Advanced Functional Materials >High-Performance Hybrid Solar Cell Made from CdSe/CdTe Nanocrystals Supported on Reduced Graphene Oxide and PCDTBT
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High-Performance Hybrid Solar Cell Made from CdSe/CdTe Nanocrystals Supported on Reduced Graphene Oxide and PCDTBT

机译：还原石墨烯氧化物和PCDTBT支撑的CdSe / CdTe纳米晶体制成的高性能混合太阳能电池

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摘要

Core/shell tetrapods synthesized from CdSe and CdTe exhibit a type Ⅱ band offset that induces separation of charge upon photoexcitation and localizes carriers to different regions of the tetrahedral geometry. CdSe/CdTe nanocrystals immobilized on oleylamine-functionalized reduced graphene oxide (rGO) sheets can be homogeneously mixed with an organic dye (PCDTBT) to form donor-acceptor dispersed heterojunctions and exhibit a high power conversion efficiency of ～3.3% in solar cell devices. The near-IR light absorbing type Ⅱ nanocrystals complement the absorption spectrum of the visible light-absorbing organics. The high efficiency is attributed to the amine-function-alized rGO sheets, which allow intimate contact with the nanocrystals and efficient dispersal in the organic matrix, contributing to highly efficient charge separation and transfer at the nanocrystal, rGO, and polymer interfaces.
机译：由CdSe和CdTe合成的核/壳四足动物表现出Ⅱ型能带偏移，它在光激发时诱导电荷分离，并使载流子位于四面体几何的不同区域。固定在油胺功能化的还原氧化石墨烯（rGO）板上的CdSe / CdTe纳米晶体可以与有机染料（PCDTBT）均匀混合，形成供体-受体分散的异质结，在太阳能电池设备中显示出约3.3％的高功率转换效率。吸收近红外光的Ⅱ型纳米晶体补充了可见光吸收有机物的吸收光谱。高效率归因于胺功能化的rGO片材，它可以与纳米晶体紧密接触并有效地分散在有机基质中，从而有助于在纳米晶体，rGO和聚合物界面上进行高效的电荷分离和转移。

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  • 来源
    《Advanced Functional Materials》 |2014年第13期|1904-1910|共7页
  • 作者

    Shi Wun Tong; Nimai Mishra; Chen Liang Su; Venkatram Nalla; Wenya Wu; Wei ji; Jie Zhang; Yinthai Chan; Kian Ping Loh;

  • 作者单位

    Graphene Research Centre Department of Chemistry National University of Singapore 3 Science Drive 3,117543,Singapore;

    Department of Chemistry National University of Singapore 3 Science Drive 3,117543, Singapore;

    Graphene Research Centre Department of Chemistry National University of Singapore 3 Science Drive 3,117543,Singapore;

    Department of Physics National University of Singapore 3 Science Drive 3,117543, Singapore;

    Department of Chemistry National University of Singapore 3 Science Drive 3,117543, Singapore;

    Department of Physics National University of Singapore 3 Science Drive 3,117543, Singapore;

    Institute of Materials Research and Engineering 3 Research Link, Singapore, 117602, Singapore;

    Department of Chemistry National University of Singapore 3 Science Drive 3,117543, Singapore;

    Graphene Research Centre Department of Chemistry National University of Singapore 3 Science Drive 3,117543,Singapore;

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