Color tunable light-emitting diodes based on copper doped semiconducting nanocrystals

被引：23

作者：

Bhaumik, Saikat ^{[1
]}

Ghosh, Batu ^{[1
]}

Pal, Amlan J. ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Solid State Phys, Kolkata 700032, India

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 08期

关键词：

QUANTUM DOTS; POLYMER; DEVICES; ELECTROLUMINESCENCE; COMPOSITES; EFFICIENT; CELLS; DYE; ZNS;

D O I：

10.1063/1.3626855

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have introduced copper-doped semiconducting nanocrystals in light-emitting diodes (LEDs). Characteristics of the devices show that electroluminescence (EL) emission in these LEDs is color tunable. In copper-doped ZnS nanocrystals in the core and Zn1-xCdxS host as a shell-layer, photoluminescence (PL) arises from a transition from conduction band-edge of the host to 3d-levels of copper-ions. The PL of the nanocrystals and hence the EL of LEDs based on such nanostructures become tunable by varying the Cd-content in Zn-Cd-S alloys, that is, Zn1-xCdxS with different values of x, which changes the conduction band-edge of the host. (C) 2011 American Institute of Physics. [doi:10.1063/1.3626855]

引用

页数：3

共 22 条

[1] White organic light-emitting devices incorporating nanoparticles of II-VI semiconductors [J].

Ahn, Jin H. ;

Bertoni, Cristina ;

Dunn, Steve ;

Wang, Changsheng ;

Talapin, Dmitri V. ;

Gaponik, Nikolai ;

Eychmueller, Alexander ;

Hua, Yulin ;

Bryce, Martin R. ;

Petty, Michael C. .

NANOTECHNOLOGY, 2007, 18 (33)

[2] Highly Efficient Green-Light-Emitting Diodes Based on CdSe@ZnS Quantum Dots with a Chemical-Composition Gradient [J].

Bae, Wan Ki ;

Kwak, Jeonghun ;

Park, Ji Won ;

Char, Kookheon ;

Lee, Changhee ;

Lee, Seonghoon .

ADVANCED MATERIALS, 2009, 21 (17) :1690-+

[3] OPTICAL-PROPERTIES OF MANGANESE-DOPED NANOCRYSTALS OF ZNS [J].

BHARGAVA, RN ;

GALLAGHER, D ;

HONG, X ;

NURMIKKO, A .

PHYSICAL REVIEW LETTERS, 1994, 72 (03) :416-419

[4] Photovoltaic properties of dye functionalized single-wall carbon nanotube/conjugated polymer devices [J].

Bhattacharyya, S ;

Kymakis, E ;

Amaratunga, GAJ .

CHEMISTRY OF MATERIALS, 2004, 16 (23) :4819-4823

[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] ELECTROLUMINESCENCE FROM CDSE QUANTUM-DOT POLYMER COMPOSITES [J].

DABBOUSI, BO ;

BAWENDI, MG ;

ONITSUKA, O ;

RUBNER, MF .

APPLIED PHYSICS LETTERS, 1995, 66 (11) :1316-1318

[7] Inkjet printing of light emitting quantum dots [J].

Haverinen, Hanna M. ;

Myllyla, Risto A. ;

Jabbour, Ghassan E. .

APPLIED PHYSICS LETTERS, 2009, 94 (07)

[8] On the absorption cross section of CdSe nanocrystal quantum dots [J].

Leatherdale, CA ;

Woo, WK ;

Mikulec, FV ;

Bawendi, MG .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (31) :7619-7622

[9] Photovoltaic heterostructure devices made of sequentially adsorbed poly(phenylene vinylene) and functionalized C60 [J].

Mattoussi, H ;

Rubner, MF ;

Zhou, F ;

Kumar, J ;

Tripathy, SK ;

Chiang, LY .

APPLIED PHYSICS LETTERS, 2000, 77 (10) :1540-1542

[10] Polymer solar cells using single-wall carbon nanotubes modified with thiophene pedant groups [J].

Nogueira, Ana Flavia ;

Lomba, Bruno S. ;

Soto-Oviedo, Mauro A. ;

Correia, Carlos Roque Duarte ;

Corio, Paola ;

Furtado, Clascidia A. ;

Hummelgen, Ivo A. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (49) :18431-18438

← 1 2 3 →