Proceedings of nanoGe Fall Meeting 2018 (NFM18)
Publication date: 6th July 2018
Recently, hybrid perovskite photovoltaics (HPPVs) have achieved conversion efficiencies
of 22 % and have revived the search for clean, affordable and efficient energy. However,
the practical realization of this hope is pending for several reasons. One of them is the
stability of the photo-absorbing hybrid perovskites (HPs), which currently degrade rapidly
when exposed to moisture [1] . Thus, the search is underway for a coating material to protect
HPs. A proper coating material should be thin to ensure minimum energy loss within the
coating-perovskites interface. It should have a wide band gap in order to serve as a good
window material and most importantly, be resistant to water. In this study, we consider a series
of methylammonium (MA) metal (B=Pb or Sn) halide (X=I, Br or Cl) perovskites (MABX3)
and their CsBX3 analogs. To select possible protective-coating candidates, we filtered the
large Aflow [2] database for inorganic materials according to several criteria: wide band
gap (> 3 eV), negligible reactivity with water, and minimal strain at the coating-perovskite
interfaces. Our database screening results in several combinations of coating materials and
perovskites substrates with mismatch < 5%, for instance, NiO at the 2×2 surface of MASnBr 3
with a strain of −0.252 % and 1.681% on the 2 × 2 surface of CsPbI3 . ZrO2 and GaN
at 2 × 2 surface of MAPbI3 , had mismatch of 1.253 % and 0.652% respectively. For these
candidate complexes, we will further model their interface geometries and electronic structures
using density-functional theory (DFT). This database-driven study and the following DFT
modeling has the potential to improve the efficiency of HP materials and serve as a starting
point in the search of novel device materials for emergent HPPV technologies.
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.