检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:高振杰[1] 杨元政[1] 王彦利[1] 谢致薇[1]
机构地区:[1]广东工业大学材料与能源学院,广东广州510006
出 处:《中国材料科技与设备》2011年第4期55-58,共4页Chinese Materials Science Technology & Equipment
基 金:国家自然科学基金资助项目(50771037);高等学校博士学科点专项科研基金资助项目(200805620004)
摘 要:用射频磁控溅射法在石英衬底上制备了ZnO:Eu^3+薄膜,通过X射线衍射仪和荧光光谱仪对样品进行了表征,考察了氧氩比和退火工艺对其结构及发光性能的影响。结果表明:样品均呈现ZnO的六角纤锌矿结构,适当的氧氩比有利于ZnO的C轴择优取向的形成,高温退火会使晶粒尺寸增大;合适的氧氩比,尤其是退火工艺(700℃)可以促进ZnO基质(372nm)到Eu^3+离子(^5Do-^7F2)之间的能量传递,但过多的氧及高温退火不利于稀土Eu^3+离子465nm(^7Fo-^5D2)到611nm(^5Do-^7F2)的直接能量传递。ZnO: Eu^3+ thin films were deposited on quartz substrates by rf magnetron sputtering. The obtained samples were characterized using X--ray diffraction (XRD) and spectrometer, respectively. Effects of O2/Ar ratio and heat treatment on the structure and photoluminescence (PL) were studied in detail. The results show that: All of the films have a hexagonal wurtzite structure of ZnO. Suitable 02/Ar ratio improves the (002) preferred orientation. The grain size increases after heat treatment. Suitable O2/Ar ratio, especially the heat treatment (700℃) can enhance the energy transfer from ZnO host (372nm) to doped Eua+ (^5D0 --^7F2 ), while the energy transfer from ^7Fo--^5De (465nm) to ^5Do--^7F2 (611nm) decreases with increasing O2/Ar ratio and annealing temperature.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.26