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Organic materials for environmentally friendly organic photovoltaics

Costa, C. ; Velho, M. ; Galvão, A. ; Charas, A.

Organic materials for environmentally friendly organic photovoltaics, Proc Industry Day - Printed Electronics and Solar Cells, Lisbon, Portugal, Vol. --, pp. -- - --, April, 2017.

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Organic photovoltaics (OPVs) represent a technology that can be potentially cheap and yields
mechanically flexible and low-weight modules, fabricated using solution deposition techniques
(e.g. rol-to-rol printing). However their manufacture involves toxic solvents, not viable for large
scale production.
In this communication, novel organic conjugated polymers with solubility in solvents of low
toxicity (e.g. ethanol) and with potential applications in OPVs, as electron-acceptors, are shown.
The new polymers are composed of quinoxaline groups in the conjugated chain to enhance the
electron-accepting character. The solubility in polar solvents, such as ethanol, is provided by
lateral hydrophilic chains. The synthesis and the characterization of such new materials and first
applications in OPV cells will be also shown