Jump to main content
Jump to site search


Enhanced moisture stability of metal halide perovskite solar cells based on sulfur–oleylamine surface modification

Author affiliations

Abstract

As one of the most promising light-harvesting materials, perovskites have drawn tremendous attention for their unique advantages, such as high efficiency, low cost and facile fabrication compared with other photovoltaic materials. Nevertheless, poor moisture tolerance of the perovskites greatly hampers the operation of such devices and hinders their commercialization. Herein, we demonstrate a facile dipping treatment using sulfur–oleylamine solution for surface atomic modulation of perovskite films. Oleylammonium polysulfides (OPs) would be self-assembled on the etched perovskite film as an ultrathin outer layer. This layer could passivate the surface chemical activity of the outer perovskite layers. Moreover, the hydrophobic OPs significantly enhance moisture stability of such devices. As a result, the obtained device without encapsulation retains more than 70% of its initial power conversion efficiency (PCE) after 14 days of exposure to a relative humidity of 40 ± 10%.

Graphical abstract: Enhanced moisture stability of metal halide perovskite solar cells based on sulfur–oleylamine surface modification

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Jul 2018, accepted on 27 Jul 2018 and first published on 30 Jul 2018


Article type: Communication
DOI: 10.1039/C8NH00163D
Citation: Nanoscale Horiz., 2018, Advance Article
  •   Request permissions

    Enhanced moisture stability of metal halide perovskite solar cells based on sulfur–oleylamine surface modification

    Y. Hou, Z. R. Zhou, T. Y. Wen, H. W. Qiao, Z. Q. Lin, B. Ge and H. G. Yang, Nanoscale Horiz., 2018, Advance Article , DOI: 10.1039/C8NH00163D

Search articles by author

Spotlight

Advertisements