DOI: https://doi.org/10.29363/nanoge.sus-mhp.2022.013
Publication date: 15th November 2022
Metal halide perovskite nanocrystals (PNCs) 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. Using a metal-organic host matrix based on a sol-gel approach allows for a controlled in-situ crystallization of perovskite nanocrystals with extremely low-demanding fabrication methods. [2] As a result, we have developed a straightforward, fast and antisolvent-free approach for the generation of high-performance nanocomposite thin films with photoluminescence quantum yield (PLQY) > 80% and 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 for different MHP compositions approach 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. acknowledges his FPU Ph.D. contract with reference FPU19/04544.
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