Performance Improvement of Perovskite Solar Cells Based on PCBM-Modified ZnO-Nanorod Arrays

Yang Xu, Yi Wang, Jichao Yu, Bingjie Feng, Hai-Jun Zhou, Jun Zhang, Jinxia Duan, Xi Fan, Peter A. Van Aken, Peter D. Lund, Hao Wang

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

Here, we report a promising perovskite solar cell structure based on a modified ZnO-nanorod interfacial structure with improved stability. An organic surface modifier, i.e., [6,6]-phenyl C-61 butyric acid methyl ester (PCMB), was employed between the perovskite and the ZnO-nanorod arrays to modify the interface condition. As a result, the optimized structure improves the light absorption, accelerates the transfer of the carriers, and reduces the electron and hole recombination losses in the solar cell. A perovskite solar cell with a structure of FTO/ZnO-nanorods/PCBM/CH3NH3PbI3 /Spiro-OMeTAD/Au gives an 18.8% enhancement in the short-circuit current density than a device without PCBM. Moreover, the open-circuit voltage was improved by 18.5% to 0.96 V. A power conversion efficiency of 11.67% was reached in cell with PCBM modification; results indicate that a modified ZnO-nanorod perovskite structure could have potential for even higher performance.

Original languageEnglish
Pages (from-to)1530-1536
Number of pages7
JournalIEEE Journal of Photovoltaics
Volume6
Issue number6
DOIs
Publication statusPublished - Nov 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • Light absorption
  • perovskite solar cell (PSC)
  • power conversion efficiency (PCE)
  • surface modification
  • ZnO-nanorod
  • [6,6]-phenyl C-61 butyric acid methyl ester (PCBM)
  • ORGANOMETAL HALIDE PEROVSKITES
  • ELECTRON COLLECTION LAYER
  • NANOWIRE ARRAYS
  • LOW-TEMPERATURE
  • EFFICIENT
  • CH3NH3PBI3
  • DEPOSITION
  • LENGTHS
  • ROUTE
  • FILMS

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