Jump to main content
Jump to site search

Issue 41, 2015
Previous Article Next Article

Solution-processed inorganic copper(i) thiocyanate (CuSCN) hole transporting layers for efficient p–i–n perovskite solar cells

Author affiliations

Abstract

CuSCN is a highly transparent, highly stable, low cost and easy to solution process HTL that is proposed as a low cost replacement to existing organic and inorganic metal oxide hole transporting materials. Here, we demonstrate hybrid organic–inorganic perovskite-based p–i–n planar heterojunction solar cells using a solution-processed copper(I) thiocyanate (CuSCN) bottom hole transporting layer (HTL). CuSCN, with its high work function, increases the open circuit voltage (Voc) by 0.23 V to 1.06 V as compared with devices based on the well-known poly(3,4-ethylenedioxythiophene) : poly(styrenesulfonate) (PEDOT : PSS) (0.83 V), resulting in a superior power conversion efficiency (PCE) of 10.8% without any notable hysteresis. Photoluminescence measurements suggest a similar charge transfer efficiency at the HTL/perovskite interface to PEDOT : PSS. However, we observe more efficient light harvesting in the presence of CuSCN at shorter wavelengths despite PEDOT : PSS being more transparent. Further investigation of the microstructure and morphology reveals differences in the crystallographic texture of the polycrystalline perovskite film, suggesting templated perovskite growth on the surface of CuSCN. The successful demonstration of the solution-processed inorganic HTL using simple and low temperature processing routes bodes well for the development of reliable and efficient flexible p–i–n perovskite modules or for integration as a front cell in hybrid tandem solar cells.

Graphical abstract: Solution-processed inorganic copper(i) thiocyanate (CuSCN) hole transporting layers for efficient p–i–n perovskite solar cells

Back to tab navigation

Supplementary files

Article information


Submitted
03 Jun 2015
Accepted
25 Aug 2015
First published
27 Aug 2015

This article is Open Access

J. Mater. Chem. A, 2015,3, 20554-20559
Article type
Paper
Author version available

Solution-processed inorganic copper(I) thiocyanate (CuSCN) hole transporting layers for efficient p–i–n perovskite solar cells

K. Zhao, R. Munir, B. Yan, Y. Yang, T. Kim and A. Amassian, J. Mater. Chem. A, 2015, 3, 20554
DOI: 10.1039/C5TA04028K

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements