1. School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China
2. Institute of Flexible Electronics, Northwestern Polytechnical University, Xi’an 710072, China
3. Yangtze River Delta Research Institute of NPU, Northwestern Polytechnical University, Taicang 215400, China
4. School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China