Perovskite Solar Cells with ZnO Electron-Transporting Materials

Peng Zhang, Jiang Wu, Ting Zhang, Yafei Wang, Detao Liu, Hao Chen, Long Ji, Chunhua Liu, Waseem Ahmad, Zhi David Chen, Shibin Li

Research output: Contribution to journalArticlepeer-review

353 Scopus citations

Abstract

Perovskite solar cells (PSCs) have developed rapidly over the past few years, and the power conversion efficiency of PSCs has exceeded 20%. Such high performance can be attributed to the unique properties of perovskite materials, such as high absorption over the visible range and long diffusion length. Due to the different diffusion lengths of holes and electrons, electron transporting materials (ETMs) used in PSCs play a critical role in PSCs performance. As an alternative to TiO2 ETM, ZnO materials have similar physical properties to TiO2 but with much higher electron mobility. In addition, there are many simple and facile methods to fabricate ZnO nanomaterials with low cost and energy consumption. This review focuses on recent developments in the use of ZnO ETM for PSCs. The fabrication methods of ZnO materials are briefly introduced. The influence of different ZnO ETMs on performance of PSCs is then reviewed. The limitations of ZnO ETM-based PSCs and some solutions to these challenges are also discussed. The review provides a systematic and comprehensive understanding of the influence of different ZnO ETMs on PSCs performance and potentially motivates further development of PSCs by extending the knowledge of ZnO-based PSCs to TiO2-based PSCs.

Original languageEnglish
Article number1703737
JournalAdvanced Materials
Volume30
Issue number3
DOIs
StatePublished - Jan 2018

Bibliographical note

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • electron transport materials
  • nanostructures
  • perovskite solar cells
  • photovoltaics
  • zinc oxide

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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