铝掺杂超细氧化锌粉体的制备与性能研究  

Preparation and Properties of Aluminum-Doped Zinc Oxide Ultrafine Powders

作　　者：陈淑刚 许林峰[2] 王书媚[3] 税安泽[2] 

机构地区：[1]四川化工职业技术学院,泸州646000 [2]华南理工大学材料科学与工程学院,广州510641 [3]湖南人文科技学院化学与材料科学系,娄底417001

出　　处：《人工晶体学报》2013年第2期322-327,共6页Journal of Synthetic Crystals

基　　金：广东省重大科技专项(2010A080405004);广东省省部产学研项目(2012B091100451);广州市应用基础研究计划项目(2012J4100006)

摘　　要：本文以Zn(NO3)2.6H2O和Al(NO3)3.9H2O为原料采用均匀沉淀法制备了Al掺杂ZnO(ZAO)超细粉体,用XRD、SEM、纳米粒度分析仪及四探针电阻仪等对ZAO超细粉体进行了测试表征。研究了反应温度、煅烧温度、反应物浓度、Al掺杂量及分散剂添加量对ZAO超细粉体形貌、尺寸及电阻率的影响。研究结果表明:制备的ZAO粉体为纤锌矿结构;煅烧温度为550℃时,ZAO晶相形成很好;随着Al掺杂量的增加,ZAO粉体电阻率降低,晶格常数减小,但当Al掺杂量大于2.0 mol%时,生成尖晶石相,其电阻率反而上升。Aluminum-doped zinc oxide （AZO） ultrafine powders were synthesized by the homogeneous precipitation method with Zn（NO3）2 ·6H20 和Al（NO3 ）3·9H20 as raw materials, and the AZO ultrafine powders were characterized by XRD, SEM, nanoparticle size analyzer and Four-point probe, resistivity. The effects of reaction temperature, calcination temperature, reactant coneentration, aluminum dopant content and dispersant content on shape, size and resistivity of the AZO ultrafine powders were examined in detail. The experimental results show that the ZAO powders have the wurtzite structure; the formation of ZAO crystal phase is good at the calcination temperature 550 ℃ ; With increasing the aluminum dopant content, the resistivity of the ZAO powders decreases, and the lattice parameters decrease, however, when the dopant content exceeds 2.0 mo1%, the spinel phase is produced, and the resistivity begins to increase.

关 键 词：超细 掺杂 均匀沉淀 铝 氧化锌 

分 类 号：O614.241[理学—无机化学]