Application of sulfonated-CNTs counter electrode in perovskite solar cells

  • WANG Ze-kai ,
  • GUO Ming-xing ,
  • SHI Xin-bo ,
  • WU Feng-hao ,
  • ZHAO Yan ,
  • YIN Shu-hui
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  • (a.College of Environment Science and Engineering;b.College of Science, Dalian Maritime University, Dalian 116026, China)

Received date: 2020-10-13

  Revised date: 2020-12-21

  Online published: 2020-12-21

Abstract

In order to solve the high cost problem caused by using noble metals as counter electrodes (CE) in perovskite solar cells (PSCs), carbon nanotubes (CNTs) were sulfonated, and the sulfonated-CNTs (s-CNTs) were used as counter electrode materials in PSCs. The charge transfer process of PSCs was studied by using steady state fluorescence (PL) and electrochemical impedance (EI). The results show that compared with the CNTs counter electrode, the s-CNTs counter electrode has better conductivity, better hole extraction and transport ability, and the energy conversion efficiency of 6.18% is obtained on the s-CNTs based PSC. For the spraying amount 1 mL/block, the annealing temperature 100 ℃ and the annealing time 30 min, the performance of s-CNTs based PSC is the best and has a good repeatability. The results can provide a new way to improve the photoelectric properties of carbon based PSCs.

Cite this article

WANG Ze-kai , GUO Ming-xing , SHI Xin-bo , WU Feng-hao , ZHAO Yan , YIN Shu-hui . Application of sulfonated-CNTs counter electrode in perovskite solar cells[J]. Journal of Dalian Maritime University, 2021 , 47(1) : 126 -132 . DOI: 10.16411/j.cnki.issn1006-7736.2021.01.015

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