1. Key Lab for Special Functional Material Ministry of Education National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology School of Materials Science and Engingeering Collaborative Innovation Center of Function Materials and Applications Henan University Kaifeng 475004 P. R. China
2. Dr. School of Energy and Environment Department of Materials Science and Engineering City University of Hong Kong Kowloon Tong Hong Kong P. R. China
3. School of Molecular and Life Sciences Curtin University Bentley WA 6102 Australia