| 简捷微波合成多角星形氧化锌 |
| Facile Microwave Heating Approach to Multigonal Star-shaped ZnO |
|
| 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[1,2]、表面声波器件[3]、场发射材料[4]、传感器[5]、紫外激光器[6]及太阳能电池[7]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[8].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. |
| 关键词: ZnO 半导体 微波辐照 星形结构 |
| 基金项目: 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 |
| Abstract: 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 0.6~1μm 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 yellowluminescence is attributed to interstitial oxygen. |
| Keywords: zinc oxide semiconductor microwave irradiation star-shaped structure |
| 投稿时间：2007-11-06 修订日期：2007-12-26 |
| 摘要点击次数: 1270 |
| 全文下载次数: 2060 |
| 胡寒梅,邓崇海,张克华,孙梅.简捷微波合成多角星形氧化锌[J].无机化学学报,2008,24(3):495-498. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
