1. Optoelectronics of Disordered Semiconductors Institute of Physics and Astronomy University of Potsdam 14476 Potsdam‐Golm Germany
2. Physics Faculty of Science and Engineering Åbo Akademi University 20500 Turku Finland
3. Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China
4. Department of Chemistry College of Science Korea University 145 Anam‐ro, Seongbuk‐gu Seoul 02841 Republic of Korea
5. Department of Chemistry and Biochemistry The University of Arizona Tucson AZ 85721‐0088 USA