Jump to main content
Jump to site search

Issue 9, 2014
Previous Article Next Article

Lead-free organic–inorganic tin halide perovskites for photovoltaic applications

Author affiliations

Abstract

Already exhibiting solar to electrical power conversion efficiencies of over 17%, organic–inorganic lead halide perovskite solar cells are one of the most promising emerging contenders in the drive to provide a cheap and clean source of energy. One concern however, is the potential toxicology issue of lead, a key component in the archetypical material. The most likely substitute is tin, which like lead, is also a group 14 metal. While organic–inorganic tin halide perovskites have shown good semiconducting behaviour, the instability of tin in its 2+ oxidation state has thus far proved to be an overwhelming challenge. Here, we report the first completely lead-free, CH3NH3SnI3 perovskite solar cell processed on a mesoporous TiO2 scaffold, reaching efficiencies of over 6% under 1 sun illumination. Remarkably, we achieve open circuit voltages over 0.88 V from a material which has a 1.23 eV band gap.

Graphical abstract: Lead-free organic–inorganic tin halide perovskites for photovoltaic applications

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Apr 2014, accepted on 29 Apr 2014 and first published on 01 May 2014


Article type: Paper
DOI: 10.1039/C4EE01076K
Author version available: Download Author version (PDF)
Citation: Energy Environ. Sci., 2014,7, 3061-3068
  •   Request permissions

    Lead-free organic–inorganic tin halide perovskites for photovoltaic applications

    N. K. Noel, S. D. Stranks, A. Abate, C. Wehrenfennig, S. Guarnera, A. Haghighirad, A. Sadhanala, G. E. Eperon, S. K. Pathak, M. B. Johnston, A. Petrozza, L. M. Herz and H. J. Snaith, Energy Environ. Sci., 2014, 7, 3061
    DOI: 10.1039/C4EE01076K

Search articles by author

Spotlight

Advertisements