Enhanced Light Harvesting in Plasmonic Dye-Sensitized Solar Cells by Using a Topologically Ordered Gold Light-Trapping Layer

Authors

  • Nailiang Yang,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (PR China), Fax:(+86) 10 8262 7566
    2. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190 (PR China)
    3. Graduate University of the Chinese Academy of Sciences, Beijing 100049 (PR China)
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    • These authors contributed equally to this work.

  • Qi Yuan,

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (PR China), Fax:(+86) 10 8262 7566
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    • These authors contributed equally to this work.

  • Prof. Jin Zhai,

    Corresponding author
    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (PR China), Fax:(+86) 10 8262 7566
    • Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (PR China), Fax:(+86) 10 8262 7566
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  • Prof. Tianxin Wei,

    1. Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081 (PR China)
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  • Prof. Dan Wang,

    Corresponding author
    1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190 (PR China)
    • State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190 (PR China)
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  • Prof. Lei Jiang

    1. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (PR China), Fax:(+86) 10 8262 7566
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Abstract

Dye-sensitized solar cells (DSSCs) are promising low-cost, high-efficiency devices with low environmental impact. One of the important methods to improve their efficiencies involves increasing the light-harvesting efficiency. Earlier work has focused on varying the morphology of the photoanode. With such a hierarchical structured photoanode in hand, we modify herein the structure of the counter electrode to enhance the optical path length through the plasmonic and reflecttion effects. With the introduced topological gold layer, the photocurrent and efficiency are increased by 16 % and 18 %, respectively, due to the increased light collection. Besides, this effect is effective at both high and low levels of solar irradiation.

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