1. Department of Mechanical Engineering; The University of Texas at Austin; Austin 78712 USA
2. Linköping University; Department of Science and Technology, Organic Electronics; SE-601 74 Norrkoping Sweden
3. Thin Film Coatings Group; Mawson Institute; University of South Australia; Mawson Lakes 5095 Australia
4. Department of Energy Conversion and Storage; Technical University of Denmark; 4000 Roskilde Denmark