Al掺杂纳米氧化锌导电粉的性能与结构  

Properties and Structure of Al-doped Conductive Zinc Oxide Powder

作　　者：熊瑜[1] 郑冀[2] 李燕[2] 刘雪佳[1] 梁璐[1] 

机构地区：[1]北京航空材料研究院,北京100095 [2]天津大学材料科学与工程学院,天津300072

出　　处：《材料工程》2012年第9期70-73,共4页Journal of Materials Engineering

摘　　要：以Zn(NO3)2.6H2O,Al(NO3)3.9H2O,尿素为原料,采用均相沉淀法,制备出碱式碳酸锌粉末,之后将前驱体在氢气气氛下煅烧,制得Al掺杂氧化锌导电粉。利用SEM,TGA,XPS和XRD等分析手段对材料性能进行表征,研究了Al掺杂氧化锌导电性能的影响。结果表明:随着Al 3+掺杂量的增大,粉体体积电阻率先降低后升高,Al 3+掺杂含量在1.5%(摩尔分数)时电阻率最低,为1.05×105Ω.cm。掺杂后的ZnO为六方纤锌矿结构,颗粒呈类椭球形,粒度分布窄,导电性能明显提高。Using zinc nitrate, aluminium nitrate and urea as raw materials, basic zinc carbonate powder was prepared by homogeneous precipitation, Al-doped ZnO powders were prepared by calcining the precursor. The property was characterized by SEM, TGA, XPS and XRD. The results show that the volume resistivity of the zinc oxide decreases to 1.05 × 105 Ω · cm when the AP＋ doping content is 1.5%（mole fraction）, much lower than that of the conventional zinc oxide powders. Al-doped ZnO nanoparticles are wurtzite structure, and similar to ellipsoidal. The grain size distribution of doped ZnO nanopowders is narrow. Meanwhile,the conductivity of Al-doped ZnO powders was improved greatly.

关 键 词：氧化锌导电粉 AL掺杂 均相沉淀 

分 类 号：TQ132.4[化学工程—无机化工]