摘要
采用水热法首先合成了Al掺杂ZnO(AZO)纳米棒,在此基础上通过550℃的氨气氛中退火制备了Al,N共掺杂ZnO(ANZO)纳米棒。运用X射线衍射(XRD),场发射扫描电镜(FESEM),透射电子显微镜(TEM),X射线能谱(EDS)和光致发光(PL)对样品进行了表征与分析。结果表明,制备的AZO和ANZO纳米棒均为六角纤锌矿结构,掺Al可使ZnO纳米棒的直径变细;该制备技术使Al,N两种元素有效地掺入ZnO纳米棒,而且N元素的掺入量随Al掺杂浓度的增加而提高。室温光致发光(PL)测试结果表明,制得的AZO和ANZO纳米棒在390nm处都有一个强的紫外发光峰,而在468nm处都存在一个很弱的蓝色发光峰。与AZO纳米棒的PL光谱比较,ANZO纳米棒在555nm处的绿色发光峰几乎消失。这些结果说明Al掺杂和Al,N共掺杂ZnO纳米棒对于开发一维纳米光电子器件具有潜在的应用价值。
Al doped ZnO（AZO） nanorods were firstly synthesized by hydrothermal method,and then Al-N co-doped ZnO（ANZO） nanorods were prepared by annealing the AZO nanorods at 550℃ in ammonia atmosphere.The samples were characterized using X-ray diffraction（XRD）,field emission scanning electron microscopy（FESEM）,transmission electron microscopy（TEM）,energy dispersive X-ray spectroscopy（EDS） and photoluminescence（PL）.The results show that the as-prepared AZO and ANZO nanorods are all hexagonal wurtzite structure,the diameter of the ZnO nanorod can be reduced by doping Al;Al and N elements have been effectively doped into ZnO nanorods through this preparation technique,and the content of N element increases with the increase of Al doping concentration.Room-temperature photoluminescence（PL） measurements show that the obtained both AZO and ANZO nanorods have a strong UV emission peak at 390nm and a weak blue emission peak at 468nm.Compared with the PL spectrum of the AZO nanorods,the green emission peak at 555nm of the ANZO nanorods is almost disappear.These results indicate that Al doped and Al-N co-doped ZnO nanorods possess potential application for the development of one-dimensional nanoscale optoelectronic devices.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2011年第3期65-69,共5页
Journal of Materials Engineering
