1. MIIT
Key Laboratory of Advanced Display Materials and Devices, Institute
of Optoelectronics and Nanomaterials, College of Materials Science
and Engineering, Nanjing University of Science and Technology, Nanjing 210094, People’s Republic of China
2. Department
of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
3. Department
of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
4. Department
of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea
5. Department
of Physics, Anhui Normal University, Anhui Province, Wuhu 241000, People’s Republic of China
6. Department
of Chemical and Biomolecular Engineering, Yonsei University, 50
Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea
7. Advanced
Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea