Low-demanding in-situ crystallization method for tunable and stable perovskite nanoparticle thin-films.
Jaume Noguera-Gómez a, Ismael Fernández-Guillen a, Pablo Franco Betancur a, Pablo P. Boix a, Rafael Abargues a
a UMDO Institut de Ciència dels Materials (ICMUV), Universitat de València
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Oral, Jaume Noguera-Gómez, presentation 111
DOI: https://doi.org/10.29363/nanoge.hopv.2022.111
Publication date: 20th April 2022

Metal halide perovskite nanocrystals can display excellent light emission properties, leveraging the chemical versatility of this family of materials.[1] However, using these features in functional films is an elusive task due to aggregation and material instability problems.[2] Using a metal-organic host matrix based on a sol-gel approach[3] allows for a controlled in-situ crystallization of perovskite nanocrystals (PNCs) with extremely low-demanding fabrication methods. As a result, this ambient annealing-free process generates high-performance nanocomposite thin films with PLQY>80% with outstanding ambient and mechanical stability. The crystallization dynamics determining the final nanoparticle size, and thus the emission properties, can be adjusted in detail through the ambient exposure and precursor concentration.

This in-situ PNCs nanocomposite synthesis approach (currently patent pending) may form the basis for the fabrication of large-area optoelectronic devices with enhanced properties, but also a groundwork on direct bandgap tunability through PNCs size’s crystallization dynamics control.

J.N.G. acknowledge his FPU PhD contract with reference FPU19/04544.

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