ROTROT (ROll-To-Roll production of Organic Tandem cells, FP7 ICT 2011) project addresses “Flexible, Organic and Large Area Electronic and photonics” (OLAE) which potentially offers a giant step for consumer electronics. In this OLAE field, Organic Photovoltaic has to compete with Si and Thin Film PV.
It is clear that harvesting energy from light presents a large area challenge. OPV has followed this tremendous growth and makes important additions to the motivation: low cost and easy manufacturing on flexible substrates by printing technologies. In deed, no manufacturing technique is faster than printing and coating under ambient conditions in terms of manufactured surface per unit time. This is, in reality, what gives OPV the competitive advantage over all the other technologies.
Nevertheless, it's necessary for OPV technology that innovative solutions are developed to overcome its current limitations in order to reach further than today's niche markets.
In that way, ROTROT aims to propose a complete solution process using significant advances in R2R techniques ending up with an environmentally friendly and safe deposition process.
To fulfill this goal, specific works would be done on:
High performance materials (photoactive polymer, electrodes, high performance interface, barrier adhesive)
The device architecture design based on tandem structure
The development a “R2R all solution process” using simultaneous multilayer formation