1. College of Physics
2. Qingdao University
3. Qingdao 266071, P. R. China
4. Key Laboratory of Photonics Materials and Technology in Universities of Shandong
5. Functional Materials Research Laboratory
6. Tongji University
7. Shanghai 200092, P. R. China
8. National Institute of Advanced Industrial Science and Technology
9. Tosu, Japan
10. International Institute for Carbon Neutral Energy Research (WPI-I2CNER)
11. Kyushu University
12. Fukuoka, Japan