【摘要】 本文采用水热法,以3mol/L KOH为矿化剂,填充度35%,温度430℃,通过添加适量比例的MgCl2.7H2O和CaO,合成了非极性生长的ZnO晶体。当Mg2+:Zn2+=2%和Ca2+:Zn2+=2~3%时,晶体c轴方向生长速度明显减弱,{0001}方向的极性生长得到控制,所合成的晶体大面积显露正极面+c{0001},同时显露负极面-c{1001-}、正锥面+p{101-1}、负锥面-p{101-1-}和柱面m{101-0}。X光能谱(EDS)没有检测到晶体中含有碱土金属离子。更多还原

【Abstract】 In this paper,nonpolar ZnO crystals were synthesized by hydrothermal method with mineralizer of 3mol/L KOH and proper MgCl2·7H2O/ CaO,the fill factor of 35%,and reaction temperature of 430℃.When Mg2+:Zn2+=2% and Ca2+:Zn2+=2-3%,the rate of growth along c-axic was weakened obviously.The obtained ZnO crystals can expose more area on the positive polar face c{0001}.And it also exposed negative polar-c{0001-},positive pyramidal face +p{101-1},negative pyramidal face-p{101-1-} and hexagonal faces m{101-0}.The content of Mg2+、Ca2+ ions in the crystals is surveyed with X-ray energy spectrum,there are no Mg2+ and Ca2+ ions in ZnO crystals.更多还原