Halide Perovskite Nanoplatelets: Shaping a New Generation of Light Emitters
Carola Lampe a
a Ludwig Maximilians University (LMU) Munich, Nanospectroscopy Group, Nano-Institute Munich, Physics Department, Germany
nanoGe Fall Meeting
Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
#NANOMAT - Advances on the Understanding and Synthesis of Nanomaterials for Photocatalysis and Optoelectronics
Barcelona, Spain, 2022 October 24th - 28th
Organizers: Ludmilla Steier and Daniel Congreve
Invited Speaker, Carola Lampe, presentation 359
DOI: https://doi.org/10.29363/nanoge.nfm.2022.359
Publication date: 11th July 2022

Halide perovskite nanocrystals (NCs) have emerged as an intriguing material for optoelectronic applications, most notably for light-emitting diodes (LEDs), lasers, and solar cells. Their emission wavelength depends not only on material composition but also on size and dimensionality, as in the case of two-dimensional (2D) nanoplatelets (NPLs). These colloidal quantum wells have additional appeal for light emission, as the one-dimensional quantum confinement enhances their radiative rates and enables directional outcoupling. On top of this, due to a monolayer-precise control over their thickness, they constitute an intriguing system for spectroscopic studies on their fundamental optical, phononic, and energetic properties.

In this talk, I will explore our recent results on halide perovskite NPLs, including their synthesis and stabilization. I will focus on their interesting excitonic properties, such as the energetic fine structure[1] with a strong thickness-dependent bright-dark exciton splitting and exciton diffusion in nanocrystal films.[2]  Further, I will highlight their advantages and disadvantages for integration into optoelectronic applications.

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