Angle-resolved cathodoluminescence polarimetry of hybrid organic-inorganic lead halide perovskites

ORAL

Abstract

Hybrid organic-inorganic lead halide perovskites have garnered a great deal of interest for cutting edge opto-electronics and it is crucial to understand how microstructure modifies light emission processes. While much work is focused on the spectral content and the quantum efficiencies, little is known about the emission directionality and the polarization of the emitted photons. Here we use angle-resolved cathodoluminescence microscopy, having spatial resolution well below the optical diffraction limit, to probe the directionality and full polarization state of emitted photons. Furthermore, we investigated the impact of a boundary on the degree of polarization and emission directionality.

**This work was supported by NASA EPSCoR RID (award number 80NSSC19M0051), UAB start-up funds and Alabama Graduate Research Scholars Program (GRSP). Cathodoluminescence microscopy was conducted at the Centre for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.

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Presenters

  • Bibek S Dhami

    • University of Alabama at Birmingham

Authors

  • Bibek S Dhami

    • University of Alabama at Birmingham

  • Vasudevan Iyer

    • Oak Ridge National Lab

  • Aniket Pant

    • University of Alabma at Birmingham

  • Ravi P Tripathi

    • University of Alabama at Birmingham

  • Ethan J Taylor

    • University of Alabama at Birmingham

  • Benjamin J Lawrie

    • Oak Ridge National Lab

  • Kannatassen Appavoo

    • University of Alabama at Birmingham