纳米晶ZrO_2:Eu^(3+)-Bi^(3+)的制备及Bi^(3+)敏化Eu^(3+)特征发射的研究  

Preparation of ZrO_2:Eu^(3+)-Bi^(3+) phosphor and Bi^(3+) sensitizing characteristic emission of Eu^(3+) ions

作　　者：桑士晶[1] 吕树臣[1] 曲秀荣[1] 杨晓旭[1] 张丽丽[1] 

机构地区：[1]哈尔滨师范大学光电带隙材料省部共建教育部重点实验室,哈尔滨150025

出　　处：《物理学报》2012年第22期426-430,共5页Acta Physica Sinica

基　　金：黑龙江省教育厅科学技术研究重点项目(批准号:12511z013)资助的课题~~

摘　　要：采用化学共沉淀法制备了纳米晶ZrO2:Eu3+-Bi3+粉体,所制备的纳米晶粉体均能观测到Eu3+离子的室温特征发射.研究了样品的晶体结构和发光性质.结果表明:经600C煅烧后得到的纳米晶ZrO2:Eu3+-Bi3+粉体的晶相为四方相,经800,950及1100C煅烧后的样品为四方相和单斜相的混合晶相.Eu3+离子在四方相中的室温特征发射明显强于在混合相中的发射.Bi3+离子的掺入对Eu3+离子的室温特征发射有显著的敏化作用.Eu3＋ and Bia＋ codoped ZrO~ nanocrystalline powders are prepared by chemical co-precipitation method. The room temperature characteristic emission of Eu3＋ can be observed from each sample. We determine the crystal structures and luminescent properties of the samples. It is shown that the crystal phase of nanocrystalline ZrO2：Eu3＋-Bi3＋ powder calcined at 600 ℃ is tetragonal, and it turns into the mixture of tetragonal and monoclinic phase as temperature rises to 800, 950, and 1100 ℃. It is obvious that characteristic emission intensity of Eu3＋ in the tetragonal phase is greater than in the mixed phase. Bi3＋ can sensitize the room temperature characteristic emission of Eu3＋ in nanocrystalline ZrO2.

关 键 词：纳米晶ZrO2 Eu3+-Bi3+ 共沉淀法 光致发光 能量传递 

分 类 号：TB383.1[一般工业技术—材料科学与工程]