White-light emission from organics-capped ZnSe quantum dots and application in white-light-emitting diodes

被引：152

作者：

Chen, HS

Wang, SJJ

Lo, CJ

Chi, JY

机构：

[1] Ind Technol Res Inst, Union Chem Labs, Hsinchu 300, Taiwan

[2] Ind Technol Res Inst, Optoelect & Syst Labs, Hsinchu 310, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 13期

关键词：

D O I：

10.1063/1.1886894

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Organics-capped ZnSe quantum dots were synthesized by a colloidal chemical approach using ZnO and Se powder as precursors. The photoluminescence of the specimens showed strong white emission (similar to 200 nm full width at half maximum) in the visible range under ambient conditions. The white emission was attributed to the mixing of blue emission of ZnSe nanocrystals exhibiting quantum confinement effect with green-red emission of radiative deep levels from ZnSe surface strained lattice. Based on organic-capped ZnSe quantum dots, the white-light-emitting diodes were fabricated using a near-UV InGaN chip as the excitation source. The diodes emitted white light with CIE chromaticity coordinates of (0.38 and 0.41) and show great potential for use in lighting applications. (C) 2005 American Institute of Physics.

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页码：1 / 3

页数：3

相关论文

共 16 条

[1] Colloidal ZnSe, ZnSe/ZnS, and ZnSe/ZnSeS quantum dots synthesized from ZnO [J].

Chen, HS ;

Lo, B ;

Hwang, JY ;

Chang, GY ;

Chen, CM ;

Tasi, SJ ;

Wang, SJJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (44) :17119-17123

[2] (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

[3] White light from InGaN/conjugated polymer hybrid light-emitting diodes [J].

Hide, F ;

Kozodoy, P ;

DenBaars, SP ;

Heeger, AJ .

APPLIED PHYSICS LETTERS, 1997, 70 (20) :2664-2666

[4] Bright UV-blue luminescent colloidal ZnSe nanocrystals [J].

Hines, MA ;

Guyot-Sionnest, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (19) :3655-3657

[5]

MATSUBARA H, 2003, Patent No. 6509651

[6] SYNTHESIS AND CHARACTERIZATION OF NEARLY MONODISPERSE CDE (E = S, SE, TE) SEMICONDUCTOR NANOCRYSTALLITES [J].

MURRAY, CB ;

NORRIS, DJ ;

BAWENDI, MG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (19) :8706-8715

[7] White light-emitting diodes of GaN-based Sr2SiO4:Eu and the luminescent properties [J].

Park, JK ;

Lim, MA ;

Kim, CH ;

Park, HD ;

Park, JT ;

Choi, SY .

APPLIED PHYSICS LETTERS, 2003, 82 (05) :683-685

[8] Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility [J].

Peng, XG ;

Schlamp, MC ;

Kadavanich, AV ;

Alivisatos, AP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (30) :7019-7029

[9] Formation of high-quality CdTe, CdSe, and CdS nanocrystals using CdO as precursor [J].

Peng, ZA ;

Peng, XG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (01) :183-184

[10] N-type colloidal semiconductor nanocrystals [J].

Shim, M ;

Guyot-Sionnest, P .

NATURE, 2000, 407 (6807) :981-983