1. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, P.R. China
2. Hebei Provincial Key Lab of Optoelectronic Information
Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, P.R. China
3. School of Pharmacy and Life Sciences, Rober Gordon University, Aberdeen, AB107GJ, United Kingdom