Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
DOI: https://doi.org/10.29363/nanoge.iperop.2019.046
Publication date: 23rd October 2018
Perovskite Solar Cells (PSC) have been one of the most promising current alternative to Silicon-based photovoltaics and big efforts have been devoted to the development of new efficient materials and innovative architectures for this class of devices. Their outstanding properties in terms of easy processability, transport and low non-radiative recombination rate led to very fast development of research activities both on the device implementation and on the characterization sides. This material has recently aroused great interest in the scientific community, as it enabled power-conversion efficiencies of over 23%. Deposition methods and morphological study have also been developed in the common effort of the scientific community to control the crystallization and correlate structure and energy conversion properties in these devices. To this extend the control of these properties is mandatory for a proper optimization of the system. Here a control of the morphology and perovskite crystal growth is presented by the use of different additives introduced in the conventional perovskite layer, aiming to highlight the profound dependence in the growth mechanisms of perovskite introduced by materials of different nature as molecules or nanoparticles. A particular attention is devoted to the study of intermolecular interactions occurring in solution deeply modifying the self-assembly process, and their relationship with the properties of the deposited thin film. The interaction among perovskite and the introduced additives in PSC is found to be crucial in influencing crystalline order, morphology and photo-physical properties of the final material. Experimental characterization and photovoltaic applications of different perovskite-based nanocomposites is presented.