Proceedings of Perovskite Thin Film Photovoltaics (ABXPV16)
Publication date: 14th December 2015
Photovoltaic perovskites field is slowly shifting from highly disordered1 perovskite solar cells towards generation of single crystal2 devices which can ultimately provide lower energy losses. In this work we investigate crystallization of lead halide perovskite from first principles by a combination of theoretical and experimental approach. Competition between iodides with solvent molecules to coordinate lead atoms will determine the species present during perovskite nucleation and growth. Low complexity DFT calculations help to understand solvent coordination ability and can be used as a tool to screen suitable solvents. Highly coordinating solvents such as DMSO will form partially covalent bonds with lead retarding crystallization kinetics and its subsequent removal may be difficult. Poorly coordinating solvents like GBL will not be able to stabilize PbI3- moieties enabling a fast reaction with the methyl ammonium cation. The theoretical approach is confirmed by the synthesis of pure material and generation in films. Importantly, water present in environmental humidity can be regarded as an additive which retards perovskite crystallization. Moisture will have a healing effect which avoids pinholes for intermediate coordinating solvents like DMF. The information presented here is crucial to understand crystallization of perovskite to further increase device efficiencies and improve lab-to-lab reproducibility.
References
1-Guerrero et al APL, 2014, 133902
2-Saidaminov et al. Nat. Commun. 2015, 6.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.