1. École Polytechnique Fédérale de Lausanne
2. Institute of Mechanical Engineering
3. Laboratory of Renewable Energy Science and Engineering
4. 1015 Lausanne
5. Switzerland
6. Empa Swiss Federal Laboratories for Materials Science and Technology
7. Laboratory Materials for Energy Conversion
8. 8600 Dübendorf
9. University of Bern
10. Department of Chemistry and Biochemistry
11. 3012 Bern
12. University of Applied Sciences Saarland
13. 66117 Saarbrücken
14. Germany