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Mechanism of carrier accumulation in perovskite thin-absorber solar cells

Author

Listed:
  • Hui-Seon Kim

    (Sungkyunkwan University)

  • Ivan Mora-Sero

    (Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I)

  • Victoria Gonzalez-Pedro

    (Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I)

  • Francisco Fabregat-Santiago

    (Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I)

  • Emilio J. Juarez-Perez

    (Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I)

  • Nam-Gyu Park

    (Sungkyunkwan University)

  • Juan Bisquert

    (Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I)

Abstract

Photovoltaic conversion requires two successive steps: accumulation of a photogenerated charge and charge separation. Determination of how and where charge accumulation is attained and how this accumulation can be identified is mandatory for understanding the performance of a photovoltaic device and for its further optimization. Here we analyse the mechanism of carrier accumulation in lead halide perovskite, CH3NH3PbI3, thin-absorber solar cells by means of impedance spectroscopy. A fingerprint of the charge accumulation in high density of states of the perovskite absorber material has been observed at the capacitance of the samples. This is, as far as we know, the first observation of charge accumulation in light-absorbing material for nanostructured solar cells, indicating that it constitutes a new kind of photovoltaic device, differentiated from sensitized solar cells, which will require its own methods of study, characterization and optimization.

Suggested Citation

  • Hui-Seon Kim & Ivan Mora-Sero & Victoria Gonzalez-Pedro & Francisco Fabregat-Santiago & Emilio J. Juarez-Perez & Nam-Gyu Park & Juan Bisquert, 2013. "Mechanism of carrier accumulation in perovskite thin-absorber solar cells," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3242
    DOI: 10.1038/ncomms3242
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    Cited by:

    1. Zhang, Lei & Chen, Zhiqiao & Su, Jing & Li, Jingfa, 2019. "Data mining new energy materials from structure databases," Renewable and Sustainable Energy Reviews, Elsevier, vol. 107(C), pages 554-567.
    2. Ndeto, Martin Paul & Wekesa, David Wafula & Kinyua, Robert & Njoka, Francis, 2020. "Investigation into the effects of the earth’s magnetic field on the conversion efficiency of solar cells," Renewable Energy, Elsevier, vol. 159(C), pages 184-194.
    3. Mehmood, Umer & Al-Ahmed, Amir & Afzaal, Mohammad & Al-Sulaiman, Fahad A. & Daud, Muhammad, 2017. "Recent progress and remaining challenges in organometallic halides based perovskite solar cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 1-14.

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