Advanced Technologies for Smart Windows.

OPV ink for direct printed organic photovoltaic cells

(c) Belectric OPV GmbH
(c) Belectric OPV GmbH
(c) LAPP Group

1 The idea behind

Traditional PV technologies are well established in roof top or solar park applications but are not appropriate for integration into facades, shading elements or windows. Solutions based on thin film technologies exist but are merely "building attached" rather than fully integrated into the building components and are thus not competitive, due to high costs and insufficient flexibility. Moreover, the traditional thin film systems do generally not meet the legal requirements for façade integrated systems. Most important, they do not offer any degrees of freedom in terms of design, as they are not easy to be tailored with respect to colour or transparency.
Organic photovoltaics are a promising alternative to traditional PV technologies, as they meet all of the requirements described above.

2 Advantages

Organic Photovoltaic Modules are due to their outstanding properties, such as

  • semi-transparency
  • light weighted
  • availability of different colours
  • design-freedom, 

extremely suitable for the integration in glass and thus for the BIPV (Building Integrated Photovoltaics).

3 Results

Several printed OPV modules were produced by BELECTRIC OPV GmbH and integrated directly in a diffusion-tight glass-glass-encapsulation with edge sealing and therefore the modules are perfectly protected against environmental influences. An optimized semiconductor ink was developed by PROFACTOR (lab scale) and Tiger Coatings (upscaling) and OPV modules were inkjet printed with a total active area of 125 cm². In the next step OPV modules will be printed with an industrial inkjet printer, which combines perfect design-freedom with the ability to print very large areas. The industrial inkjet printer was developed by Durst. Apart from the MEM4WIN-Project, OPV Modules from BELECTRIC OPV were already used for the German pavilion at the World Expo 2015 in Milano, where stylised trees integrated with the OPV modules, which are embedded in a flexible film, provide shade for visitors and generate energy at the same time. A second shading system was installed in Addis Ababa for the Peace and Security Building of the African Union in the shape of the African continent. 


4 Contacts

For OPV glass-glass module with direct inkjet printed organic photovoltaic cells, please contact:
Tobias Sauermann
Belectric OPV GmbH
+49 911 21780 -14

For the industrial large-format inkjet printer for direct printing of active OPV layer on window glass, please contact:
DURST Phototechnik AG