Fine tuning of emission property of white light-emitting diodes by quantum-dot-coating on YAG:Ce nanophosphors

被引:24
作者
Kong, Dal Sung [1 ]
Kim, Min Jeong [2 ]
Song, Hee Jo [3 ]
Cho, In Sun [4 ]
Jeong, Sohee [5 ]
Shin, Hyunjung [1 ]
Lee, Sangwook [6 ]
Jung, Hyun Suk [7 ]
机构
[1] Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South Korea
[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea
[3] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea
[4] Ajou Univ, Dept Mat Sci & Engn & Energy Syst Res, Suwon 443749, South Korea
[5] Korea Inst Machinery & Mat, Nanomech Syst Res Div, Daejeon 305343, South Korea
[6] Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea
[7] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea
基金
新加坡国家研究基金会;
关键词
LED; Nanophosphor; YAG; QD; Surface functionalization; Warm white light; CORE/SHELL NANOCRYSTALS; PHOSPHOR; PHOTOLUMINESCENCE; GROWTH; NANOPARTICLES; QUALITY;
D O I
10.1016/j.apsusc.2016.04.116
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report fine tuning of emission color of Ce-doped yttrium aluminum garnet (Y3Al5O12:Ce3+, YAG:Ce) nanophosphor-based white light-emitting diodes (WLED), by coating CdSe/CdS/ZnS quantum dots (QDs) onto the surface of the YAG:Ce nanoparticles via surface functionalization of both the QDs and the YAG:Ce. Mixture of bromo-functionalized QDs and amino-functionalized YAG:Ce nanoparticles results in conformal coating of the QDs onto the YAG:Ce nanoparticles (QD@YAG:Ce). By varying the QD to YAG:Ce weight ratios, the luminescence spectra of the QD@YAG:Ce are tuned. A high-quality warm-white-light emission is achieved by appropriate combination of the yellow and red emissions from the QD@YAG:Ce, and the blue emission from InGaN LED chip. However, without surface functionalization, irregular mixtures of YAG:Ce and QDs are formed, which consequently make it hard to control the emission spectra. This study demonstrates a promising way to prepare uniformly QD-coated nanophosphors and an approach to control the emission spectra the nanophosphors. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:467 / 473
页数:7
相关论文
共 36 条
[1]  
[Anonymous], [No title captured]
[2]   Influence of surface hydroxylation on 3-aminopropyltriethoxysilane growth mode during chemical functionalization of GaN surfaces:: An angle-resolved X-ray photoelectron spectroscopy study [J].
Arranz, A. ;
Palacio, C. ;
Garcia-Fresnadillo, D. ;
Orellana, G. ;
Navarro, A. ;
Munoz, E. .
LANGMUIR, 2008, 24 (16) :8667-8671
[3]   Luminescence decays with underlying distributions: General properties and analysis with mathematical functions [J].
Berberan-Santos, Mario N. ;
Valeur, Bernard .
JOURNAL OF LUMINESCENCE, 2007, 126 (02) :263-272
[4]   Growth and properties of semiconductor core/shell nanocrystals with InAs cores [J].
Cao, YW ;
Banin, U .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (40) :9692-9702
[5]   (CdSe)ZnS core-shell quantum dots: Synthesis and characterization of a size series of highly luminescent nanocrystallites [J].
Dabbousi, BO ;
RodriguezViejo, J ;
Mikulec, FV ;
Heine, JR ;
Mattoussi, H ;
Ober, R ;
Jensen, KF ;
Bawendi, MG .
JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (46) :9463-9475
[6]   Semiconductor-Nanocrystals-Based White Light-Emitting Diodes [J].
Dai, Quanqin ;
Duty, Chad E. ;
Hu, Michael Z. .
SMALL, 2010, 6 (15) :1577-1588
[7]   CdSe/CdS/ZnS Double Shell Nanorods with High Photoluminescence Efficiency and Their Exploitation As Biolabeling Probes [J].
Deka, Sasanka ;
Quarta, Alessandra ;
Lupo, Maria Grazia ;
Falqui, Andrea ;
Boninelli, Silmona ;
Giannini, Cinzia ;
Morello, Giovanni ;
De Giorgi, Milena ;
Lanzani, Guglielmo ;
Spinella, Corrado ;
Cingolani, Roberto ;
Pellegrino, Teresa ;
Manna, Liberato .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (08) :2948-2958
[8]   Characterisation of YAG:Ce powders thermal treated at different temperatures [J].
Del Rosario, G ;
Ohara, S ;
Mancic, L ;
Milosevic, O .
APPLIED SURFACE SCIENCE, 2004, 238 (1-4) :469-474
[9]   Near-Infrared Photoluminescence Enhancement in Ge/CdS and Ge/ZnS Core/Shell Nanocrystals: Utilizing IV/II-VI Semiconductor Epitaxy [J].
Guo, Yijun ;
Rowland, Clare E. ;
Schaller, Richard D. ;
Vela, Javier .
ACS NANO, 2014, 8 (08) :8334-8343
[10]   Synthesis and optical properties of Ce3+-doped Y3Mg2AlSi2O12 phosphors [J].
Katelnikovas, A. ;
Bettentrup, H. ;
Uhlich, D. ;
Sakirzanovas, S. ;
Juestel, T. ;
Kareiva, A. .
JOURNAL OF LUMINESCENCE, 2009, 129 (11) :1356-1361