Proceedings of nanoGe International Conference on Perovskite Solar Cells, Photonics and Optoelectronics (NIPHO19)
DOI: https://doi.org/10.29363/nanoge.nipho.2019.036
Publication date: 21st November 2018
Halide perovskite photovoltaics are receiving a huge attention in the recent few years. Undoubtedly this attention is mainly due to the outstanding power conversion efficiencies, surpassing 23%, reported for photovoltaic devices, fabricated with polycrystalline films from low cost techniques. In addition, the combination of halide perovskite with Si solar cell in a tandem configuration has allowed to prepare devices with efficiency higher than 27%. The great success of halide perovskites boosted also the interest on the nanoparticles (NPs) of these materials. Perovskite NPs are also generating a huge interest as relative easy preparation methods yield a simple core structure, without need for passivating shells, reach photoluminescence quantum yield (PLQY) higher than 90%.This remarkable PLQY points to low non-radiative recombination and consequently shows excellent rationale for the development of solar cells. In this talk I show the interest of perovskite NPs in the development of photovoltaic devices highlighting the advantages and also the current limitations in order to produce high performance devices. The similarities and differences with standard bulk perovskite thin films are analyzed. Interestingly the use of NPs can help to overcome some limitations of bulk perovskites stabilizing new interesting crystalline phases or avoiding mixed halide ion migration.