A Wafer-Level Integrated White-Light-Emitting Diode Incorporating Colloidal Quantum Dots as a Nanocomposite Luminescent Material

被引：28

作者：

Dang, Cuong ^{[1
]}

Lee, Joonhee ^{[1
]}

Zhang, Yu ^{[2
]}

Han, Jung ^{[2
]}

Breen, Craig ^{[3
]}

Steckel, Jonathan S. ^{[3
]}

Coe-Sullivan, Seth ^{[3
]}

Nurmikko, Arto ^{[1
]}

机构：

[1] Brown Univ, Sch Engn, Providence, RI 02912 USA

[2] Yale Univ, Dept Elect Engn, New Haven, CT 06520 USA

[3] Yale Univ, Dept Elect Engn, QD Vis Inc, Lexington, MA 02421 USA

来源：

ADVANCED MATERIALS | 2012年 / 24卷 / 44期

基金：

美国国家科学基金会;

关键词：

ENERGY-TRANSFER; EFFICIENCY;

D O I：

10.1002/adma.201202354

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-brightness, color-tunable colloidal quantum dots are incorporated in 3D nanoporous GaN to create a nanocomposite material (CQD/NP-GaN), which is demonstrated to be an effective approach for a wavelength down-conversion nanomaterial in solid-state lighting. The white-light-emitting diode (LED) made from a blue GaN-based LED and the CQD/NP-GaN shows an increase of extraction efficiency by a factor of 2, a controllable white color, and a down-conversion quantum efficiency as high as 82%.

引用

收藏

页码：5915 / +

页数：5

相关论文

共 19 条

[1] Nanocrystal-based light-emitting diodes utilizing high-efficiency nonradiative energy transfer for color conversion [J].

Achermann, Marc ;

Petruska, Melissa A. ;

Koleske, Daniel D. ;

Crawford, Mary H. ;

Klimov, Victor I. .

NANO LETTERS, 2006, 6 (07) :1396-1400

[2] A nearly ideal phosphor-converted white light-emitting diode [J].

Allen, Steven C. ;

Steckl, Andrew J. .

APPLIED PHYSICS LETTERS, 2008, 92 (14)

[3]

[Anonymous], 1931, COMM INT ECL P

[4] High-performance crosslinked colloidal quantum-dot light-emitting diodes [J].

Cho, Kyung-Sang ;

Lee, Eun Kyung ;

Joo, Won-Jae ;

Jang, Eunjoo ;

Kim, Tae-Ho ;

Lee, Sang Jin ;

Kwon, Soon-Jae ;

Han, Jai Yong ;

Kim, Byung-Ki ;

Choi, Byoung Lyong ;

Kim, Jong Min .

NATURE PHOTONICS, 2009, 3 (06) :341-345

[5] Electroluminescence from single monolayers of nanocrystals in molecular organic devices [J].

Coe, S ;

Woo, WK ;

Bawendi, M ;

Bulovic, V .

NATURE, 2002, 420 (6917) :800-803

[6]

Coe-Sullivan S., 2012, PHOSPH GLOB SUMM SCO

[7] (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

[8]

Dang C, 2012, NAT NANOTECHNOL, V7, P335, DOI [10.1038/NNANO.2012.61, 10.1038/nnano.2012.61]

[9] Increase in the extraction efficiency of GaN-based light-emitting diodes via surface roughening [J].

Fujii, T ;

Gao, Y ;

Sharma, R ;

Hu, EL ;

DenBaars, SP ;

Nakamura, S .

APPLIED PHYSICS LETTERS, 2004, 84 (06) :855-857

[10] A Single-Phased Emission-Tunable Phosphor Ca9Y(PO4)7:Eu2+,Mn2+ with Efficient Energy Transfer for White-Light-Emitting Diodes [J].

Huang, Chien-Hao ;

Chen, Teng-Ming ;

Liu, Wei-Ren ;

Chiu, Yi-Chen ;

Yeh, Yao-Tsung ;

Jang, Shyue-Ming .

ACS APPLIED MATERIALS & INTERFACES, 2010, 2 (01) :259-264