Abstract
Organic photovoltaics are being explored for powering
electronic devices by harvesting the sun's energy or
indoor lighting. Such solar cells have shown promise as
they can be deposited on thin flexible foils that enable
flexibility of integration within products while keeping
the weight light. Several R&D efforts are underway in
creating improved organic solar cells in terms of their
efficiency and other performance metrics. One such is the
FACESS project ("Flexible Autonomous Cost Efficient
Energy Source and Storage"), funded under the 7th
Framework Programme of the European Commission. The main
goal is to develop economically viable solar cells on
large scale for mass production to achieve the power
conversion efficiency (PCE) up to 2.5% thus producing 250
mW under AM1.5 illumination. This requires selection,
modification and up-scaling of suitable solar cell
materials, effective patterning technologies, development
of the printing processes and improved encapsulation
technologies. This development will be done keeping all
the time the application, the potential and the required
performance in mind. The development and experimental
results of roll-to-roll techniques such as wet chemical
etching of an anode electrode, gravure printing of
PEDOT:PSS and the P3HT:PCBM photoactive layer and gas
barrier lamination of the printed modules will be
presented in detail. The performance status for lab-scale
printed solar cells is currently 2.4% of PCE under AM1.5
illumination. In addition the major technological
challenges and solutions for roll-to-roll manufacturing
will be summarised. (4 refs)
| Original language | English |
|---|---|
| Title of host publication | 2009 European Microelectronics and Packaging Conference |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| Number of pages | 4 |
| ISBN (Electronic) | 978-0-6152-9868-9 |
| ISBN (Print) | 978-1-4244-4722-0 |
| Publication status | Published - 2009 |
| MoE publication type | A4 Article in a conference publication |
