Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.022
Publication date: 20th April 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. 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 on exciton-phonon coupling.[2] Further, I will look into carrier transport mechanisms and highlight their advantages and disadvantages for integration into optoelectronic applications.