Honeycomb-shaped charge collecting electrodes for dipole-assisted back-contact perovskite solar cells

Xiongfeng Lin, Sonia R. Raga, Anthony S.R. Chesman, Qingdong Ou, Liangcong Jiang, Qiaoliang Bao, Jianfeng Lu, Yi-Bing Cheng, Udo Bach

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Dipole-field-assisted charge-transporting-material-free lead halide perovskite solar cells (PSCs) using a back-contact configuration feature intrinsic advantages, such as no parasitic light absorption and high architectural defect tolerance. Herein, a newly designed, highly defect tolerant honeycomb-shaped back-contact (HBC) electrode was incorporated into dipole-field-assisted-back-contact PSCs, aiming to optimize the charge transport distance before being collected by the electrodes. HBC-PSCs with three feature sizes were fabricated in order to understand the effect of charge transport distance on device performance. The photovoltaic performance of HBC-PSCs correlates inversely proportional to the feature sizes. The mechanism behind the performance difference is elucidated via a detailed analysis through device current voltage characterization, transient photovoltage decay measurement and photocurrent mapping. A comprehensive comparison between honeycomb-shaped and interdigitated finger back-contact electrodes for PSCs is also conducted.

Original languageEnglish
Article number104223
Number of pages8
JournalNano Energy
Volume67
DOIs
Publication statusPublished - Jan 2020

Keywords

  • Charge transport distance
  • Honeycomb-shaped back-contact electrodes
  • Perovskite solar cells
  • Surface modification

Cite this

Lin, Xiongfeng ; Raga, Sonia R. ; Chesman, Anthony S.R. ; Ou, Qingdong ; Jiang, Liangcong ; Bao, Qiaoliang ; Lu, Jianfeng ; Cheng, Yi-Bing ; Bach, Udo. / Honeycomb-shaped charge collecting electrodes for dipole-assisted back-contact perovskite solar cells. In: Nano Energy. 2020 ; Vol. 67.
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abstract = "Dipole-field-assisted charge-transporting-material-free lead halide perovskite solar cells (PSCs) using a back-contact configuration feature intrinsic advantages, such as no parasitic light absorption and high architectural defect tolerance. Herein, a newly designed, highly defect tolerant honeycomb-shaped back-contact (HBC) electrode was incorporated into dipole-field-assisted-back-contact PSCs, aiming to optimize the charge transport distance before being collected by the electrodes. HBC-PSCs with three feature sizes were fabricated in order to understand the effect of charge transport distance on device performance. The photovoltaic performance of HBC-PSCs correlates inversely proportional to the feature sizes. The mechanism behind the performance difference is elucidated via a detailed analysis through device current voltage characterization, transient photovoltage decay measurement and photocurrent mapping. A comprehensive comparison between honeycomb-shaped and interdigitated finger back-contact electrodes for PSCs is also conducted.",
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Honeycomb-shaped charge collecting electrodes for dipole-assisted back-contact perovskite solar cells. / Lin, Xiongfeng; Raga, Sonia R.; Chesman, Anthony S.R.; Ou, Qingdong; Jiang, Liangcong; Bao, Qiaoliang; Lu, Jianfeng; Cheng, Yi-Bing; Bach, Udo.

In: Nano Energy, Vol. 67, 104223, 01.2020.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Chesman, Anthony S.R.

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AU - Jiang, Liangcong

AU - Bao, Qiaoliang

AU - Lu, Jianfeng

AU - Cheng, Yi-Bing

AU - Bach, Udo

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