Fe掺杂片状ZnO晶体的制备及光学性能研究  

Investigations on the preparation and optical properties of Fe-doped sheet-like ZnO crystal

作　　者：余小红[1] 刘长珍[1] 孟大维[1] 谢静[1] 王君霞[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院,教育部纳米矿物材料及应用工程研究中心,湖北武汉430074

出　　处：《功能材料》2011年第7期1324-1326,1331,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(40872039);中国地质大学(武汉)中央高校基本科研业务费专项资金优秀青年教师基金资助项目(CUGL090227);教育部纳米矿物材料及应用工程研究中心开放研究基金资助项目(2010-09);无机合成与制备化学国家重点实验室(吉林大学)开放研究基金资助项目(2010-04)

摘　　要：采用均匀沉淀法在常温开放体系下制备了片状ZnO晶体前驱物,经600℃煅烧得到纯ZnO晶体;在此基础上,采用原位掺杂的方法制备了片状掺Fe的ZnO晶体。通过体视显微镜、XRD、UV-Vis吸收和PL研究了Fe掺杂对片状ZnO晶体结构和光学性能的影响。结果显示掺Fe后ZnO晶体仍具有正六边形形貌和纤锌矿结构,其在398nm处的紫外发射峰和458nm处的蓝光发射峰位置保持不变,但晶片直径减小,禁带宽度增大,发光峰强度降低。Sheet-like ZnO crystal and sheet-like Fe-doped ZnO crystal were prepared by homogeneous precipitation method and in-situ doping method in room temperature under open system,respectively.In order to investigate the influence of Fe-doping to ZnO,we used stereomicroscope,X-ray diffractometer,fluorescence spectroscope and ultraviolet-visible-near infrared spectrophotometer to express the structure and optical properties of the samples.The result indicated that pure ZnO and Fe-doped ZnO both have hexagon shape,wurtzite structure and two photoluminescence peaks 398 and 458nm.Besides,Fe-doped ZnO crystal has 97.5% absorption rate of ultraviolet light in the range of 200 to 365nm.What＇s more,the diameter of the sheet-like Fe-doped ZnO crystal decreased and the energy gap increased compared to pure ZnO crystal.In addition,the lower light emission was observed when doping Fe into ZnO.

关 键 词：ZNO 铁掺杂 制备 光学性能 

分 类 号：O571.22[理学—粒子物理与原子核物理]