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首页> 外文期刊>Applied Physics Letters >Graded bandgap structure for PbS/CdS/ZnS quantum-dot-sensitized solar cells with a Pb_xCd_(1-x)S interlayer
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Graded bandgap structure for PbS/CdS/ZnS quantum-dot-sensitized solar cells with a Pb_xCd_(1-x)S interlayer

机译：具有Pb_xCd_（1-x）S中间层的PbS / CdS / ZnS量子点敏化太阳能电池的梯度带隙结构

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摘要

To suppress the electron-hole recombination in the multishell sensitizer for quantum-dot-sensitized solar cells (QDSCs), the Pb_xCd_(1-x)S interlayer is incorporated between the PbS core and CdS shell. The PbS/Pb_xCd_(1-x)S/CdS structure enhances the cell efficiency by ～60% compared to PbS/CdS QDSCs, and consequently shows a power-conversion efficiency of 1.37% with ZnS coating. Open-circuit voltage decay confirmed that the Pb_xCd_(1-x)S interlayer effectively reduces the recombination at the PbS/CdS interface. Furthermore, with respect to the peak shift of incident photon-to-current conversion efficiency, the interlayer also increases the light-harvesting efficiency in the higher-wavelength region by reducing the exciton confinement within the PbS sensitizer.
机译：为了抑制量子点敏化太阳能电池（QDSC）的多壳敏化剂中的电子-空穴复合，在PbS芯和CdS壳之间引入了Pb_xCd_（1-x）S中间层。与PbS / CdS QDSC相比，PbS / Pb_xCd_（1-x）S / CdS结构将电池效率提高了约60％，因此在ZnS涂层中显示出1.37％的功率转换效率。开路电压衰减证实了Pb_xCd_（1-x）S中间层有效地减少了PbS / CdS界面处的复合。此外，关于入射光子到电流转换效率的峰值偏移，中间层还通过减少PbS敏化剂内的激子限制而提高了较高波长区域的光收集效率。

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  • 来源
    《Applied Physics Letters》 |2013年第18期|183901.1-183901.4|共4页
  • 作者

    Jongmin Kim; Hongsik Choi; Changwoo Nahm; Chohui Kim; Jae Ik Kim; Woojin Lee; Suji Kang; Byungho Lee; Taehyun Hwang; Helen Hejin Park; Byungwoo Park;

  • 作者单位

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

    Department of Chemistry and Chemical Biology, School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA;

    WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea;

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