Longkun Yang,a Zhifang Ren,a Meng Zhang,a Yanli Song,a Pan Li,ab Yun Qiu,a Pingye Dengb and Zhipeng Li*a
首都师范大学李志鹏教授
a The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P. R. China
b Beijing Center for Physical and Chemical Analysis, Beijing Academy of Science and Technology, Beijing 100089, P. R. China