Proceedings of International Conference on Perovskite Thin Film Photovoltaics, Photonics and Optoelectronics (ABXPV18PEROPTO)
Publication date: 11th December 2017
Hybrid perovskites are excellent optoelectronic materials for solar cells. They suffer, however, from dynamical hysteresis with implications for photovoltaic performance [1]. The anomalous current-voltage charateristic is connected with the accumulation of charged point defects from Schottky pairs by the contacts, which create local potentials affecting the behavior of photocarriers.
In order to unveil the role of Schottky disorder in the operation of solar cells [2], we have studied a realistic TiO2 – MAPI heterojunction with density functional theory. First, we have calculated the equilibrium case in the dark, when anion vacancies accumulate by the surface. Second, we have focused on the open-circuit voltage point under illumination, when cation defects approach the interface and reverse the surface polarization. Our results show as well the splitting of the photogenerated electron-hole pairs on both sides of the contact; the slight coupling of their wave functions suggests long lifetimes –already observed in transient measurements–, fast charge separation, and efficient operation with perovskite solar cells.
[1] “Surface Polarization Model for the Dynamic Hysteresis of Perovskite Solar Cells”, J. Phys. Chem. Lett., 8, 915–921 (2017).
[2] “Self-Regulation Mechanism for Charged Point Defects in Hybrid Halide Perovskites”, Angew. Chem. Int. Ed., 54, 1791–1794 (2015).
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.