Work function engineering of electrodes via electropolymerization of ethylenedioxythiophenes and its derivatives

被引：28

作者：

Shi, Yumeng ^{[2
]}

Luo, Shyh-Chyang ^{[1
]}

Fang, Wenjing ^{[2
]}

Zhang, Keke ^{[2
]}

Ali, Emril Mohamed ^{[1
]}

Boey, F. Y. C. ^{[2
]}

Ying, Jackie Y. ^{[1
]}

Wang, Junling ^{[2
]}

Yu, Hsiao-hua ^{[1
]}

Li, Lain-Jong ^{[2
]}

机构：

[1] Inst Bioengn & Nanotechnol, Singapore 138669, Singapore

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

来源：

ORGANIC ELECTRONICS | 2008年 / 9卷 / 05期

关键词：

work function; PEDOT; electropolymerization;

D O I：

10.1016/j.orgel.2008.06.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The work functions of two commonly used electrodes, Au and indium-tin-oxide (ITO), can be modified by surface-electropolymerization of ethylenedioxythiophenes (EDOT) or its derivatives. The resulting work function is tunable continually by varying the electropolymerization condition. The value of work function of ITO (or Au) electrodes can be adjusted to decrease by 0.6 eV (or increase by 0.4 eV) when the deposited EDOT film is thin (<40 nm). By contrast, when the EDOT film deposited with thickness greater than 40 nm, the work function is controlled by the intrinsic property of the polymers regardless of the electrode materials. A diode devices with EDOT-COOH modified on ITO surface demonstrates the possibility of improving contact property in organic electronics using the proposed method. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：859 / 863

页数：5

共 28 条

[21] Self-assembly surface modified indium-tin oxide anodes for single-layer light-emitting diodes
Morgado, J
Barbagallo, N
Charas, A
Matos, M
Alcácer, L
Cacialli, F
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2003, 36 (05) : 434 - 438
[22] MOUFFOUK F, 2006, ELECTROCHEM COMMUN, V8, P3
[23] Mullen K., 2006, ORGANIC LIGHT EMITTI
[24] 3,4-Ethylenedioxythiophene (EDOT) as a versatile building block for advanced functional p-conjugated systems
Roncali, J
Blanchard, P
Frère, P
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (16) : 1589 - 1610
[25] Stacked organic light-emitting diodes in full color
Sheats, JR
[J]. SCIENCE, 1997, 277 (5323) : 191 - 192
[26] ORGANIC ELECTROLUMINESCENT DIODES
TANG, CW
VANSLYKE, SA
[J]. APPLIED PHYSICS LETTERS, 1987, 51 (12) : 913 - 915
[27] Contact resistance between pentacene and indium-tin oxide (ITO) electrode with surface treatment
Yun, Dong-Jin
Lee, Dong-Kyu
Jeon, Hwan-Ki
Rhee, Shi-Woo
[J]. ORGANIC ELECTRONICS, 2007, 8 (06) : 690 - 694
[28] Tuning the work function of gold with self-assembled monolayers derived from X-[C6H4-CC-]nC6H4-SH (n = 0, 1, 2; X = H, F, CH3, CF3, and OCH3)
Zehner, RW
Parsons, BF
Hsung, RP
Sita, LR
[J]. LANGMUIR, 1999, 15 (04) : 1121 - 1127

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