A quinoxaline based N-heteroacene interfacial layer for efficient hole-injection in quantum dot light-emitting diodes

被引：29

作者：

Bai, Linyi ^{[1
]}

Yang, Xuyong ^{[2
]}

Ang, Chung Yen ^{[1
]}

Kim Truc Nguyen ^{[1
]}

Ding, Tao ^{[2
]}

Bose, Purnandhu ^{[1
]}

Gao, Qiang ^{[1
]}

Mandal, Amal Kumar ^{[1
]}

Sun, Xiao Wei ^{[2
]}

Demir, Hilmi Volkan ^{[2
]}

Zhao, Yanli ^{[1
,3
]}

机构：

[1] Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, LUMINOUS Ctr Excellence Semicond Lighting & Displ, Singapore 639798, Singapore

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

NANOSCALE | 2015年 / 7卷 / 27期

基金：

新加坡国家研究基金会;

关键词：

CARBAZOLE COMPOUNDS; TRIPLET EMITTERS; CHARGE-TRANSPORT; HIGHLY EFFICIENT; HOST MATERIALS; PERFORMANCE; ACENES;

D O I：

10.1039/c5nr03197d

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

A series of N-heterocyclic quinoxaline derivatives was successfully synthesized and applied as hole transport layers in quantum dot light-emitting diodes (QLEDs). By inducing sp(2) N-atoms into the quinoxaline backbone, the electron affinity of the obtained material was enhanced, and its optical properties and bandgap became tunable. Quinoxaline based N-heteroacenes show a narrow bandgap, high thermal stability, and aligned film morphology. The resulting N-heteroacene polymer based QLED exhibits superior performance to poly(9-vinylcarbazole) based QLED. This study presents a strategy towards the design of novel N-rich molecules for the fabrication of QLEDs with improved performance.

引用

页码：11531 / 11535

页数：5

共 34 条

[1]

Organic semiconductors for solution-processable field-effect transistors (OFETs) [J].

Allard, Sybille ;

Forster, Michael ;

Souharce, Benjamin ;

Thiem, Heiko ;

Scherf, Ullrich .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (22) :4070-4098

[2]

The larger acenes: Versatile organic semiconductors [J].

Anthony, John E. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (03) :452-483

[3]

Effects of electronegative substitution on the optical and electronic properties of acenes and diazaacenes [J].

Appleton, Anthony Lucas ;

Brombosz, Scott M. ;

Barlow, Stephen ;

Sears, John S. ;

Bredas, Jean-Luc ;

Marder, Seth R. ;

Bunz, Uwe H. F. .

NATURE COMMUNICATIONS, 2010, 1

[4]

Multicolored Light-Emitting Diodes Based on All-Quantum-Dot Multilayer Films Using Layer-by-Layer Assembly Method [J].

Bae, Wan Ki ;

Kwak, Jeonghun ;

Lim, Jaehoon ;

Lee, Donggu ;

Nam, Min Ki ;

Char, Kookheon ;

Lee, Changhee ;

Lee, Seonghoon .

NANO LETTERS, 2010, 10 (07) :2368-2373

[5]

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-+

[6]

Toward a rational design of poly(2,7-carbazole) derivatives for solar cells [J].

Blouin, Nicolas ;

Michaud, Alexandre ;

Gendron, David ;

Wakim, Salem ;

Blair, Emily ;

Neagu-Plesu, Rodica ;

Belletete, Michel ;

Durocher, Gilles ;

Tao, Ye ;

Leclerc, Mario .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (02) :732-742

[7]

A low-bandgap poly(2,7-carbazole) derivative for use in high-performance solar cells [J].

Blouin, Nicolas ;

Michaud, Alexandre ;

Leclerc, Mario .

ADVANCED MATERIALS, 2007, 19 (17) :2295-+

[8]

Carbazole compounds as host materials for triplet emitters in organic light-emitting diodes:: Tuning the HOMO level without influencing the triplet energy in small molecules [J].

Brunner, K ;

van Dijken, A ;

Börner, H ;

Bastiaansen, JJAM ;

Kiggen, NMM ;

Langeveld, BMW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (19) :6035-6042

[9]

Colloidal quantum-dot light-emitting diodes with metal-oxide charge transport layers [J].

Caruge, J. M. ;

Halpert, J. E. ;

Wood, V. ;

Bulovic, V. ;

Bawendi, M. G. .

NATURE PHOTONICS, 2008, 2 (04) :247-250

[10]

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

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