Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Abstract
Metal halide perovskites (ABX₃) have attracted immense attention due to their tunable bandgap, strong light–matter interactions, and excellent optoelectronic performance. Among their various forms, perovskite nanocrystals (PNCs) offer distinct advantages, including quantum confinement, high photoluminescence quantum yields, and enhanced control over emission properties. This makes PNCs an ideal choice for display and lighting applications. In this class, Methylammonium lead bromide (MAPbBr3) nanocrystals exhibit bright green emission and high optical stability, making them a suitable model for studying emission behavior.
Our study aims to experimentally elucidate the anisotropic emission behavious of MAPbBr3 nanocrystal fims of varying thicknesses and provide insights into the quantitative determination of dipole orientation and its impact on optoelctronic performance. By implementaing and analyzing angle-dependent photoluminescence (PL), we examine how emission intensity, polarization, and wavelength vary with pbservation angle. Thus, the work intends to explicate how structural ordering and dipole alignment contribute to directional emission. The understanding of these relationships will provide deeper insight into light–matter interactions in PNCs and help develop strategies to enhance emission directionality and light-outcoupling efficiency, paving the way for more efficient perovskite-based optoelectronic devices.
Keywords: Metal Halide Perovskites, Nanocrystals, Anisotropic emission
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