中国激光, 2014, 41 (2): 0206002, 网络出版: 2014-01-23
NaGdF4:Nd3+纳米球和纳米棒的热淬灭特性
Thermal Quenching Characteristics of NaGdF4:Nd3+ Nanoparticles and Nanorods
材料 稀土掺杂纳米晶 光谱的温度关系 热淬灭 materials rare-earth-doped nanocrystals temperature dependence of spectrum thermal quenching
摘要
采用水热法制备出了掺钕四氟化钆钠(NaGdF4:Nd3+)纳米球和纳米棒。用X射线衍射(XRD)仪和扫描电镜(SEM)对纳米晶的晶型结构以及形貌进行了表征。研究了纳米晶在室温下的发光特性,并与体材料作对比。对于Nd3+发光的热淬灭特性,拟合了纳米晶和体材料在变温荧光下的实验数据。发现与体材料相比,NaGdF4:Nd3+纳米晶具有更小的热淬灭速率,纳米球与纳米棒的热淬灭速率相近。
Abstract
NaGdF4:Nd3+ nanoparticles and nanorods are synthesized by hydrothermal method. X-ray diffraction(XRD) and scanning electron microscope(SEM) are used to characterize the crystal strcucture and morphologies of these nanocrystals, respectively. Their luminescent properties at room temperature are studied and compared with those of the bulk powders. In particular, thermal queching characteristics for the luminescence of Nd3+ are studied, and the temperature dependence of luminescence of NaGdF4:Nd3+ nanocrystals and bulk powders are fitted. It is observed that the thermal quenching rate in NaGdF4:Nd3+ nanocrystals is lower than that in the bulk powders, and the thermal quenching rate in nanoparticles is close to that in nanorods.
代江云, 冯国英, 陈蛟, 殷家家, 周寿桓. NaGdF4:Nd3+纳米球和纳米棒的热淬灭特性[J]. 中国激光, 2014, 41(2): 0206002. Dai Jiangyun, Feng Guoying, Chen Jiao, Yin Jiajia, Zhou Shouhuan. Thermal Quenching Characteristics of NaGdF4:Nd3+ Nanoparticles and Nanorods[J]. Chinese Journal of Lasers, 2014, 41(2): 0206002.