Increased Grain Size and Longer Photogenerated Carrier Life Time Achieved with Cd Incorporation in MAPbI$_{\mathrm{3}}$ Perovskite.

ORAL

Abstract

We report that cadmium (Cd) incorporation in methylammonium lead iodide (MAPbI$_{\mathrm{3}})$ perovskite leads to increased average grain size and improved photogenerated carrier life time. Enhanced PL intensity and significantly higher carrier life time reflect the impact of a reduced density of grain boundaries and a concomitant reduction in recombination sites, in agreement with the observed increase in average grain size for those films incorporating Cd. Longer photogenerated carrier lifetimes concur with improved photoconversion efficiencies measured for perovskite solar cells utilizing Cd-doped perovskite absorbers.

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Authors

  • Niraj Shrestha

    • University of Toledo
    • university of toledo

  • Suneth Watthage

    • University of Toledo

  • Zhaoning Song

    • University of Toledo

  • Geethika Liyanage

    • University of Toledo

  • Paul Roland

    • University of Toledo

  • Adam Phillips

    • University of Toledo

  • Michael Heben

    • University of Toledo

  • Randy Ellingson

    • University of Toledo