1. V.Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, pr. Nauki 41, Kyiv 03028, Ukraine
2. Graduate School of Organic Materials Science, Yamagata University, Jonan 4-3-16, Yonezawa 992-8510, Japan
3. Chemistry Department, University of Bari, via Orabona 4, 70125 Bari, Italy
4. CNR-Institute for Chemical and Physical Process, SS Bari, via Orabona 4, 70125 Bari, Italy
5. Department of Chemical Science and Engineering, National Institute of Technology, Tokyo College 1220-2, Kunugida, Hachioji, Tokyo 193-0997, Japan
6. T. Shevchenko National University, Physics Department, Glushkova Str. 4, Kyiv 03127, Ukraine