1. College of Physics and Information Engineering Institute of Micro‐Nano Devices and Solar Cells Fuzhou University Fuzhou 350108 P. R. China
2. Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 P. R. China
3. Information Engineering School of Nanchang University Nanchang 330031 China
4. Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou 213164 P. R. China