Jump to main content
Jump to site search

Issue 41, 2017
Previous Article Next Article

Enhanced electronic transport in Fe3+-doped TiO2 for high efficiency perovskite solar cells

Author affiliations

Abstract

Oxygen vacancies in non-stoichiometric TiO2 electron transport layers can capture injected electrons and act as recombination centers. In this study, the compact TiO2 electron transport layers of perovskite solar cells (PSCs) are doped with different molar ratios of Fe3+ in order to passivate such defects and improve their electron transport properties. The electrical conductivity, absorption, crystal structure, and the performance of the PSCs are systematically studied. It shows that Fe3+-doping improves the conductivity of TiO2 compact layers compared with the pristine TiO2, boosting the photovoltaic performance of PSCs. The reduced trap-filled limit voltage (VTFL) of the Fe3+-doped TiO2 compact layers suggests that trap density in the Fe3+-TiO2 films is much lower than that of a pristine TiO2 film. With the optimized doping concentration (1 mol%) of Fe3+, the best power conversion efficiency of PSCs is improved from 16.02% to 18.60%.

Graphical abstract: Enhanced electronic transport in Fe3+-doped TiO2 for high efficiency perovskite solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Aug 2017, accepted on 15 Sep 2017 and first published on 18 Sep 2017


Article type: Paper
DOI: 10.1039/C7TC03845C
Citation: J. Mater. Chem. C, 2017,5, 10754-10760
  •   Request permissions

    Enhanced electronic transport in Fe3+-doped TiO2 for high efficiency perovskite solar cells

    X. Gu, Y. Wang, T. Zhang, D. Liu, R. Zhang, P. Zhang, J. Wu, Z. D. Chen and S. Li, J. Mater. Chem. C, 2017, 5, 10754
    DOI: 10.1039/C7TC03845C

Search articles by author

Spotlight

Advertisements