1. UNAM—National Nanotechnology Research Center Institute of Materials Science and Nanotechnology Bilkent University 06800 Ankara Turkey
2. Department of Energy Engineering Faculty of Engineering Ankara University 06830 Ankara Turkey
3. Department of Electrical and Electronics Engineering and NANOTAM—Nanotechnology Research Center Bilkent University 06800 Ankara Turkey
4. Department of Chemistry Faculty of Science Gazi University Teknikokullar 06500 Ankara Turkey
5. Department of Engineering Physics Faculty of Engineering Ankara University 06100 Ankara Turkey
6. Department of Physics Faculty of Science Bilkent University 06800 Ankara Turkey
7. Department of Chemistry Faculty of Science Bilkent University 06800 Ankara Turkey