Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.301
Publication date: 20th April 2022
Ligand-free lead halide perovskite nanocrystals displaying quantum confinement effects (i.e., quantum dots or QDs) can be achieved by in situ preparation and processing within scaffolds in which a fine control over the pore size distribution has been achieved.[1] In this talk, the synthetic procedures to attain such ligand free QDs, as well as their main photophysical and optoelectronic properties will be reviewed, with emphasis on the possibilities that the absence of organic ligands offer to achieve control over the optical and charge transport properties. Evidence of efficient dot-to-dot transport,[2] fast photoactivation,[3] high photoluminescence quantum yield (>85%) and enhanced durability,[4] with respect to their bulk counterparts, will be provided for different films made of MAPbI3, MAPbBr3, CsPbI3 and FAPbBr3 quantum dots embedded in porous matrices. Also, the absence of ligands implies an excellent opportunity to analyse fundamental interactions, such electron-phonon coupling[5] and the response to the environment,[6] without the interference of organic capping layers. Overall, these results demonstrate that adequately designed networks of ligand-free perovskite quantum dots can be used as both light harvesters and photocarrier conductors, in an alternative configuration to those employed in previously developed QD optoelectronic devices.
Tipo de presentación: Oral (Invited Speaker)
Financial support of the Spanish Ministry of Science and Innovation under grant PID2020-116593RB-I00 funded by MCIN/AEI/10.13039/501100011033 and of Junta de Andalucía under grant P18-RT-2291 (FEDER/UE) is gratefully acknowledged.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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