1. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of China
2. Key Laboratory of Sensor and Sensor Technology, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou 730000, People’s Republic of China
3. Key Laboratory for Special Function Materials and Structural Design of the Ministry of Education, Lanzhou University, Lanzhou 730000, People’s Republic of China