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Project: Specially Designed Materials and Architectures for Organic Photovoltaic Cells

Main Objective: The overall objective of the project is the development of new conjugated polymers and strategies to optimise the texture/morphology of electron-donor/electron-acceptor systems to prepare organic photovoltaic cells with improved efficiencies.

In order to achieve this goal, several approaches are going to be carried out, namely:

i) combine donor and acceptor blocks in single chains linked by saturated bridges to create abrupt D/A interfaces and to obtain films with controlled morphologies adequate to favor the photovoltaic phenomena in the device structure;
ii) ) use of adequate substituents to modify the donor and acceptor units to optimise their electron affinity or ionisation potential and to control their supramolecular arrangement;
iii) synthesis of donor and acceptor crosslinkable polymers to prepare segregated D/A columnar-like domains, at the micro- or submicrometer dimensions, by exploring a new method using the inherent tendency of polymer blends to phase segregation;
iv) exploring the use of crosslinkable polymers to fabricate multilayer device structures, in particular tandem cells.

The photophysical study of the new materials prepared under the project will also be performed (luminescent properties) in order to establish structure - fundamental properties relevant to the design of optimal structures with photovoltaic effect.
Reference: PTDC/CTM/64127/2006
Funding: FCT/PTDC
Start Date: 01-01-2008
End Date: 01-12-2010
Team: Ana Maria de Matos Charas, Jorge Manuel Ferreira Morgado
Groups: Organic Electronics – Lx
Partners: Instituto Superior Técnico
Local Coordinator: Ana Maria de Matos Charas
Links: Internal Page
Associated Publications