Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Publication date: 6th February 2020
The increasing world energy demand makes compulsory the search of energy sources alternative to fossil fuels. Among alternative energy sources, the new frontier of the photovoltaic research is represented by Perovskite Solar Cells (PSC), which rose in efficiency from 3.2% to 22-23% in only few years.[1] Polymeric Hole Transport Materials are used to both extract holes and protect perovskite from moisture degradation due to their superior sealant ability.[2] In this work we prepared several conductive polymers of the P3HT and PTAA families. P3HT structure was modulated in molecular weight and regioregularity, to search for correlations between structures and synthetic methods.[3] The P3HT were prepared by different synthetic methods, based on oxidant, C-H activation and living polymerization conditions. The oxidative method[4] gave polymers with moderate regioregularity and, in general, high molecular weight, while the C-H activation method[5] produced good regioregular polymers (92-95%) but having relatively low molecular weight (below 18-20 kDa). The GRIM method,[6] with a particular Ni catalyst, achieved nearly living polymerization conditions giving 100% regioregular P3HT of tuned very high molecular weight.
The PTAA were prepared by polymerization of dibromo-substituted linkers with different anilines, with a Pd catalyst bearing a NHC ligand.[7] Polymers with short to medium molecular weight were obtained.
The characterization was performed by UV-Vis, fluorescence spectroscopy, molecular weight determination, electrochemistry and thermal analysis. The polymers showed a very good stability and the estimation of energy levels was compatible with the most common perovskites used in solar cells.
P3HT and PTAA have been used as HTMs for fabrication of perovskite solar cell using crystal engineering method,[8] reaching the photo conversion efficiency of 17% and 13.4% respectively . The JV results confirm that the synthesized polymers have a good potential for using as a HTM in PSCs.
This work was supported by the Italian Ministry of Economic Development in the framework of the Operating Agreement with ENEA for Research on the Electric System.
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.