1. Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), Xi’an 710072, People’s Republic of China
2. Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Xi’an 710072, People’s Republic of China
3. King Abdullah University of Science and Technology (KAUST), Division of Physical Science and Engineering, and KAUST Solar Center, Thuwal 23955-6900, Saudi Arabia