简捷微波合成多角星形氧化锌  

Facile Microwave Heating Approach to Multigonal Star-shaped ZnO

作　　者：胡寒梅[1] 邓崇海[2] 张克华[1] 孙梅[1] 

机构地区：[1]安徽建筑工业学院材料与化学工程学院,合肥230022 [2]合肥学院化学与材料工程系,合肥230022

出　　处：《无机化学学报》2008年第3期495-498,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20501002);安徽省教育厅自然科学基金(No.2005KJ110,No.2006KJ159B);安徽省高校青年教师科研计划(No.2005jq1147zd,No.2006jq1228)资助项目

摘　　要：ZnO为直接宽禁带半导体材料,室温下禁带宽度达到3.37eV,束缚激子结合能高达60meV,可广泛用于光电器件、表面声波器件、场发射材料、传感器、紫外激光器及太阳能电池等。由于结构形貌与材料的性能和应用相关,ZnO纳米材料形貌控制一直是该材料研究领域的热点。由ZnO纳米棒和纳米线组成一定规则的聚集体,可以构筑特殊的纳米功能材料和纳米器件,已引起人们的高度关注。具有特殊花样的ZnO单晶聚集体的制备方法有水热法、热蒸发输运沉积法和超声辐照法等。Using Zn（acac）2 as precursor, ethylenediamine as base, distilled water as solvent, multigonal（octagonal and above） star-shaped ZnO microcrystals with high purity and even particle size have been prepared in domestic microwave oven by low heating for 8 min. The obtained powder was characterized by XRD, FESEM and TEM. The individual star-shaped ZnO microcrystal was composed of some hexagonal nanocones with diameters of 100-500 nm and lengths of 0.6-1 μm growing along c axis. The room temperature PL spectrum showed a strong broad yellow emission with peak located at 564 nm. The deep-level involved in the yellow luminescence is attributed to interstitial oxygen.

关 键 词：ZNO 半导体 微波辐照 星形结构 

分 类 号：O611.62[理学—无机化学] O614.241[理学—化学]