1. Key Laboratory of Photovoltaic Materials Henan University Kaifeng 475004 P. R. China
2. College of Chemistry and Chemical Engineering & Technology Innovation Center of Industrial Hemp for State Market Regulation Qiqihar University Qiqihar 161006 P. R. China
3. Institute of Ion-Plasma and Laser Technologies Uzbekistan Academy of Sciences 33, Durmon Yuli St. Tashkent 100125 Uzbekistan
4. Shanxi Institute of Flexible Electronics Northwestern Polytechnical University Xi'an 710072 P. R. China