La_(2)O_(3)∶Eu^(3+)纳米棒的水热合成以及光学性质研究  

Hydrothermal Synthesis and Luminescence Properties of La_(2)O_(3)∶Eu^(3+)Nanorods

作　　者：曹霞 鲁登云 朱彦华 贺梦冬[1] CAO Xia;LU Deng-yun;ZHU Yan-hua;HE Meng-dong(College of Science, Central South University of Forestry and Technology, Changsha 410004, China)

机构地区：[1]中南林业科技大学理学院,中国长沙410004

出　　处：《湖南师范大学自然科学学报》2021年第4期126-130,共5页Journal of Natural Science of Hunan Normal University

基　　金：湖南省自然科学基金(2019JJ40533);材料表界面科学与技术湖南省重点实验室开放基金(KFBJM2019001)。

摘　　要：以La(NO3)3·6H_(2)O,Eu(NO_(3))_(3)·6H_(2)O和正丁胺等为原料,采用水热法合成La(OH)3∶Eu^(3+)纳米棒前驱体,进而退火制备La_(2)O_(3)∶Eu^(3+)纳米棒,并通过X射线衍射、扫描电镜及荧光光谱分析等手段对产物进行表征。结果表明,所得纳米棒呈现出多孔的棒状形貌,具有较高的结晶度。通过荧光光谱分析,La_(2)O_(3)∶Eu^(3+)纳米棒在288 nm附近的电荷迁移带激发下,主要发射峰位于611 nm附近并呈现出鲜艳的红色荧光,对应Eu^(3+)的^(5)D_(0)→^(7)F_(2)跃迁。In this paper,La(OH)3∶Eu^(3+)precursors were synthesized via the hydrothermal method using La(NO_(3))_(3)·6H_(2)O,Eu(NO_(3))_(3)·6H_(2)O,and n-butylamine as source materials.La_(2)O_(3)∶Eu^(3+)nanorods were converted from La(OH)3∶Eu^(3+)precursors through annealing.The as-synthesized nanorods were characterized by X-ray diffraction,scanning electron microscopy and photoluminescence spectra.Our results show that the nanorods were well-crystallized with porous morphology.Their photoluminescence spectra presented a strong emission around 611 nm,arising from the 5D0→7F2 transition of Eu^(3+)ions,which was resulted from the excitation by the charge transfer band at 288 nm.

关 键 词：La_(2)O_(3)∶Eu^(3+) 掺杂 纳米棒 水热合成 光致发光 

分 类 号：O482.31[理学—固体物理]