Press release | Photovoltaic solar power
The Organic/Hybrid Printed Photovoltaic field is growing and is reaching the production scale where development of large area processes is needed. To this aim, researchers from CEA-Liten, based at INES, France, have developed a flexible organic photovoltaic module manufactured entirely by inkjet printing processes that demonstrates power conversion efficiency above 4% for high value, custom-made, solar devices.
These results represent the culmination of 4 years of efforts mainly
directed towards the development of printing platform with industrial printheads
(up to 1024 nozzles), printing process (in ambient air atmosphere) and
post-treatment of every layers as well as materials and multi-layer 3D
structure optimization. The process route has been optimized on INES technology
platform devoted to organic PV. The printed modules with a size of 15x10 cm are
constituted from eight individuals cells in the form of stripes interconnected
in series are able to produce an electrical output of 0,41 W under 3,8 V. This
represents a power conversion efficiency of 4.3% over the active area.
Inkjet printing process actually enables the direct patterning of each
layer without any mask leading to an important freedom of design. This technological
breakthrough enables the development of fully custom-made printed PV modules covering
a wide variety of variables including: electrical characteristics, design,
shape or coloration.
his is a strategic leading position for CEA for improved integration of PV
modules within mobile electronic devices (laptops, smartphones etc) and Internet
of Things applications for example.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.