1. V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Pr. Nauky 41, Kyiv 03028, Ukraine
2. Laboratory of Organic Electronics, Linköping University, Norrköping 60174, Sweden
3. Wallenberg Wood Science Center, Laboratory of Organic Electronics, Linköping University, Norrköping 60174, Sweden
4. Institute of High Technologies, Taras Shevchenko National University, Kyiv 01033, Ukraine
5. National University “Kyiv-Mohyla Academy”, Skovorody, 2, Kyiv 04070, Ukraine
6. National Technical University “Igor Sikorsky Kyiv Polytechnic Institute”, 37, Peremohy Ave., Kyiv 03056, Ukraine
7. Institute of Physics, NAS of Ukraine, Pr. Nauki 46, Kyiv 03028, Ukraine