808 nm/980 nm近红外光激发下CaSc_(2)O_(4):Er,Nd纳米晶的上转换发光特性  

Upconversion Luminescence of CaSc_(2)O_(4):Er,Nd Nanocrystals Under 808 nm/980 nm Near Infrared Excitation

作　　者：崔文豪 彭亚茹 李静 黄宇欣 陈力 CUI Wenhao;PENG Yaru;LI Jing;HUANG Yuxin;CHEN Li(School of Materials Science and Engineering,Changchun University of Technology,Changchun 130012,China;Advanced Institute of Materials Science,Changchun University of Technology,Changchun 130012,China)

机构地区：[1]长春工业大学材料科学与工程学院,吉林长春130012 [2]长春工业大学材料科学高等研究院,吉林长春130012

出　　处：《发光学报》2023年第2期289-297,共9页Chinese Journal of Luminescence

基　　金：Supported by Natural Science Foundation of Jilin Province(20220101024JC,20200201247JC,20170520110JH);National Natural Science Foundation of China(11504029,11474035)。

摘　　要：通过水热法合成了一系列CaSc_(2)O_(4):Er^(3+),Nd^(3+)纳米晶。随着Nd^(3+)浓度和激发波长的变化,详细研究了CaSc_(2)O_(4):Er^(3+),Nd^(3+)氧化物在可见光和近红外(NIR)区域的发光特性。在808 nm激发下,Er^(3+)离子的发光强度随着Nd^(3+)离子浓度的增加出现增强。相对的红色强度也有轻微的增强。在980 nm激发下,Nd^(3+)离子几乎不吸收980 nm的光子,只有Er^(3+)离子的吸收和发射被发现。相对的红色强度没有变化。此外,在近红外光谱中,只观察到Er^(3+)离子的发射,这与可见光光谱一致。详细的研究揭示了新型CaSc_(2)O_(4):Er^(3+),Nd^(3+)纳米晶在808 nm和980 nm近红外激发下的上转换发光(UCL)机制。A series of CaSc_(2)O_(4):Er^(3+),Nd^(3+)nanocrystals were synthesized by the hydrothermal method.The luminescence properties of the CaSc_(2)O_(4):Er^(3+),Nd^(3+)oxide crystals in the visible-light and near infrared(NIR)regions were investigated in detail as the Nd^(3+)concentrations and excited wavelengths vary.Under 808 nm excitation,the luminescence intensity of Er^(3+)ions appears to be enhanced as the concentration of Nd^(3+)ions increase.The relative red intensity also has the slight enhancement.Under 980 nm excitation,Nd^(3+)ions hardly absorb 980 nm photons,only the absorption and emission of Er^(3+)ions are found.The relative red intensity has no change.Furthermore,only the emission of Er^(3+)ion was observed in NIR spectrum,which is consist as the visible spectrum.The detailed study reveals the possible upconversion luminescence(UCL)mechanism involved in a novel CaSc_(2)O_(4):Er^(3+),Nd^(3+)nanocrystals under 808 nm and 980 nm NIR excitation.

关 键 词：上转换发光 Nd^(3+)离子 Er^(3+)离子 CaSc_(2)O_(4)纳米晶 近红外激发 

分 类 号：O482.31[理学—固体物理]