Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Organic photovoltaic cells show tremendous promise as energy conversion devices, thanks to key attributes such as flexibility and low-cost production. The field of organic electronics is entering its commercial phase. The recent market introduction of the first prototypes based on organic electronic components, as organics transistors is set to augment the existing market presence for other technologies and organic photovoltaic products are not far behind. A possible insertion of the OPV technology in the market involves a safe and environmentally friendly production process. However, the toxicity of these solvents will not allow proceeding to mass production in industrial countries with a strict environmental, health and safety (EHS) legislation. In addition organic solar cells based in chlorinated solvents are not suitable for large-area fabrication since the safety precautions for large-area deposition in an industrial environment would increase the production cost beyond any economical sensible measure. In this work we focus on the binary solvent gradient method to calculate Hansen solubility parameters (HSP) for the design of green ink formulations of polymer/fullerene bulk-heterojunction for solar cells. A list of suitable green solvents was obtained from a computer simulation using the HSP of both polymers and the junction. Thin films and devices were fabricated in order to validate experimentally the theoretical results. The efficiencies were compared with the performance of devices fabricated from common halogenated solvents. The aim of this work is to use a new approach to calculate HSP with less experimental effort and polymer/fullerene blends. The choice of solvents is a critical aspect that affects conformation and distribution of the molecules in OPV inks. The use of non-conventional solvents for OPV fabrication is not only an opportunity to reduce health and environmental hazards during the process. As the list of possible solvents is extensive (nowadays we are working with 22.000 solvents), a suitable method must be selected in order to reduce the amount of solvent under proposed criteria.
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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.
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