SERVICE R F.Will UV lasers beat the blues[J].Science,1997,276:895–897. [2]WANG Z L.Zinc oxide nanostructures:growth,properties and applica-tions[J].J Phys,Condensed Matter,2004,25(16):R829–R858. [3]CHEN Li,ZHANG Jiahua,ZHANG Xia.Synthesis and optical proper-ties of Eu3+,Li+-codoped ZnO:Zn phosphors[J].J Optoelectron Laser(in Chinese),2008,19(5):632–635 [4]GU Feng,WANG Shufen,LU Mengkai.Structure evaluation and highly enhanced luminescence of Dy3+-doped ZnO nanocrystals by Li+doping via combustion method[J].Langmuir,2004,9(20):3528–3531. [5]YANG Xiujian,SHI Chaoshu,XU Xiaoliang.The surface effect and luminescence properties of nanostructure ZnO and ZnO:Eu3+[J].Acta Phys Sin(in Chinese),2002,51(12):2871–2874. [6]KANG Ming,XIE Kenan,LU Zhongyuan.Preparation of nanometer material ZnO:Eu,Li with red fluorescence by the sol–gel method[J].JSichuan Univ(Eng Sci Ed)(in Chinese),2005,37(1):65–68. [7]LIU Guixiang,XU Guangliang,LUO Qingping.Synthesis of doped zinc oxide via solid-state reaction at room temperature[J].Electron Compon Mater(in Chinese),2006,25(10):37–40. [8]HU Wenyuan,YANG Dingming,LIU Xun.Preparation of nano-ZnO with red fluorescence by mechanical solid-phase reaction[J].Chin J Lumin(in Chinese),2007,28(6):919–922. [9]XIA Changkui,HUANG Jianfeng,CAO Liyun.Preparation of ZnO nanocrystallites by microwave hydrothermal process[J].J Synth Cryst(in Chinese),2008,37(4):833–838. [10]SHEN Lin,ZHAO Zongbin,QIU Jieshan.Sol–gel synthesis of ZnO nanomaterials and its antibacterial properties[J].J Funct Mater(in Chinese),2007,38(11):1908–1911. [11]LI Bin,DU Fanglin.Preparation of nanoparticles of ZnO by precipita-tion Method[J].J Qingdao Univ Sci Technol(in Chinese),2004,25(1):21–25. [12]WANG Yanxiang,SUN Jian,FAN Xueyun,et al.Preparation of nano-meter-sized ZnO powder by direct precipitation method[J].China Ce-ram(in Chinese),2007,43(11):31–33. [13]TANG Jiaoning,GONG Xiaozhong,LI Junqin.Synthesis of nanometer ZnO particles by directly precipitation method[J].J Inorg Mater(in Chinese),2006,21(1):65–69. [14]XU Pengshou,SUN Yuming,SHI Chaoshu,et al.The electronic structure of ZnO and its defects[J].Sci Chin Ser E(in Chinese),2001,31(4):358–365. [15]XIN Xianshuang,ZHOU Baibin,LüShuchen,et al.Preparation and luminescence characteristics of Eu-doped nanocrystalline zinc oxide[J].Acta Phys Sin(in Chinese),2005,54(4):1859–1862. [16]SONG Guoli,LIANG Hong,SUN Kaixia.Study on the visible emis-sion mechanism of nanocrystalline ZnO powder[J].Acta Photonica Sin(in Chinese),2004,33(4):485–488.