Zhang Mei-Ling, Chen Yu-Hong, Zhang Cai-Rong, Li Gong-Ping. Effect of intrinsic defects and copper impurities co-existing on electromagnetic optical properties of ZnO: First principles studyJ. Acta Physica Sinica, 2019, 68(8): 087101. DOI: 10.7498/aps.68.20182238