CdS及其稀土掺杂纳米带的制备与发光性质的研究  

Photoluminescence properties of CdS and rare earth-doped CdS nanobelts

作　　者：陈海燕[1,2] 杨晓玲[1] 罗庇荣[1] 刘应开[1] 

机构地区：[1]云南师范大学物理与电子信息学院,云南昆明650092 [2]福建水利电力职业技术学院,福建永安366000

出　　处：《功能材料》2010年第1期115-117,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(10764005);教育部新世纪优秀人才支持计划资助项目(NCET-08-0926);云南省自然科学基金资助项目(06A0025Q;2007PY01-41);云南省教育厅基金资助项目(06Y091)

摘　　要：采用热蒸发法制备CdS及其稀土掺杂的纳米带(CdS∶Ce3+、CdS∶Er3+)。利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和荧光光谱仪(PL)对纳米带的形貌、晶体结构和发光性质进行了表征和分析。结果表明,所制备的纳米带的外形规则,表面光滑、平整,纳米带的厚度大约在20～60nm范围内;纳米带具有六方结构,晶格常数a=0.414nm、c=0.671nm;CdS纳米带的光致发光谱的谱峰位于405nm左右;CdS∶Ce3+纳米带的光致发光谱的谱峰位于523和535nm处;CdS∶Er3+纳米带的光致发光谱中观察到3个强的发光峰,分别位于525、556和582nm处。CdS and rare earth-doped CdS nanobelts were synthesized by thermal evaporation method.These synthesized nanobelts were characterized with scanning electron microscopy （SEM）,X-ray diffraction （XRD） and photoluminescence spectroscopy （PL）.SEM images show that each nanobelt has a uniform width along its entire length,flat and smooth surface.A typical thickness of these nanobelts is in the range of tens of nanometers.XRD pattern confirmed that nanobelts are hexagonal wurtzite structure with lattice constants a=0.414nm and c=0.671nm.Room-temperature photoluminescence spectra of the CdS nanobelt revealed that the emission band is centered at about 405nm.CdS∶Ce3＋ nanobelts shows two emission bands centered at 523 and 535nm.CdS∶Er3＋ nanobelts shows three emission bands centered at 525,556,and 582nm respectively.

关 键 词：CDS 稀土掺杂 纳米带 光致发光 

分 类 号：O472.3[理学—半导体物理] O614.242[理学—物理]