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

[1] Conductivity shift of polyethylenedioxythiophenes in aqueous solutions from side-chain charge perturbation [J].

Ali, Emril Mohamed ;

Kantchev, Eric Assen B. ;

Yu, Hsiao-hua ;

Ying, Jackie Y. .

MACROMOLECULES, 2007, 40 (17) :6025-6027

[2]

[Anonymous], 1987, ELECT STRUCTURE CHEM

[3] Passive matrix display of organic LEDs [J].

Arai, M ;

Nakaya, K ;

Onitsuka, O ;

Inoue, T ;

Codama, M ;

Tanaka, M ;

Tanabe, H .

SYNTHETIC METALS, 1997, 91 (1-3) :21-25

[4] NOISE AND THE KELVIN METHOD [J].

BAIKIE, ID ;

MACKENZIE, S ;

ESTRUP, PJZ ;

MEYER, JA .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1991, 62 (05) :1326-1332

[5] VISIBLE-LIGHT EMISSION FROM SEMICONDUCTING POLYMER DIODES [J].

BRAUN, D ;

HEEGER, AJ .

APPLIED PHYSICS LETTERS, 1991, 58 (18) :1982-1984

[6] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].

BURROUGHES, JH ;

BRADLEY, DDC ;

BROWN, AR ;

MARKS, RN ;

MACKAY, K ;

FRIEND, RH ;

BURN, PL ;

HOLMES, AB .

NATURE, 1990, 347 (6293) :539-541

[7] Controlling Schottky energy barriers in organic electronic devices using self-assembled monolayers [J].

Campbell, IH ;

Rubin, S ;

Zawodzinski, TA ;

Kress, JD ;

Martin, RL ;

Smith, DL ;

Barashkov, NN ;

Ferraris, JP .

PHYSICAL REVIEW B, 1996, 54 (20) :14321-14324

[8] Controlling charge injection in organic electronic devices using self-assembled monolayers [J].

Campbell, IH ;

Kress, JD ;

Martin, RL ;

Smith, DL ;

Barashkov, NN ;

Ferraris, JP .

APPLIED PHYSICS LETTERS, 1997, 71 (24) :3528-3530

[9] Self-assembly of conjugated molecular rods: A high-resolution STM study [J].

Dhirani, AA ;

Zehner, RW ;

Hsung, RP ;

GuyotSionnest, P ;

Sita, LR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (13) :3319-3320

[10]

DIAO L, 1991, J APPL PHYS, V101, P14510

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