Suppressed Decomposition of Perovskite Film on ZnO Via a Self-Assembly Monolayer of Methoxysilane

Detao Liu, Yafei Wang, Zhen She, Hualin Zheng, Peng Zhang, Feng Wang, Jiang Wu, Zhi Chen, Shibin Li

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Although ZnO is an attractive electron transport layer (ETL) for high performance perovskite solar cells (PSCs) due to its suitable energy structure, high electron mobility, and low-temperature process, perovskite films on ZnO are decomposed rapidly as the substrate is heated over 90 °C. However, the annealing temperature higher than 90 °C is mandatory to produce high quality perovskite films. Here, for the first time, the use of an ultra-thin self-assembly monolayer (SAM) of methoxysilane on ZnO ETL to suppress the decomposition of perovskite films is reported. A self-form solvent annealing (SFSA) method is also carried out to improve the crystal quality of perovskite, and the champion device of SAM modified ZnO based PSCs yields a PCE of 18.34%. All these processes are conducted at low temperature and compatible with fabrication of flexible devices.

Original languageEnglish
Article number1800240
JournalSolar RRL
Volume2
Issue number12
DOIs
StatePublished - Dec 1 2018

Bibliographical note

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • interface modification
  • methoxysilane
  • perovskite solar cells
  • solvent annealing
  • thermal stability
  • zinc oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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