Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
Publication date: 20th April 2022
In this work, we present a scaffold assisted synthesis of CsPbI3 quantum dots (QDs) in the “black” optically active phase directly in a film. By using a porous network made of stacked SiO2 nanospheres, we create a mesoporous scaffold with a 50% porosity which allows a further infiltration of a CsPbI3 precursor solution. After a thermal treatment at only 100ºC, we obtain CsPbI3 QDs thanks to the strain conferred by the matrix during crystal growth without the need of any ligands nor additives. Nanocrystals optical properties can be tuned by means of quantum confinement effects either varying the precursor solution concentration but also as a consequence of Iodine/Lead ratio (I-/Pb2+) alteration. Additionally, the control in the filling of the matrix enables an efficient charge transport between QDs by charge percolation mechanism. This allows us to develop solar cells or deep-red emission devices.
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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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