Robust reproducible large-area molecular rectifier junctions

被引：7

作者：

Che, Hui-Juan ^{[1
,2
]}

Chia, Perq-Jon ^{[1
]}

Chua, Lay-Lay ^{[1
]}

Sivaramakrishnan, Sankaran ^{[1
]}

Tang, Jie-Cong ^{[2
]}

Wee, Andrew T. S. ^{[1
]}

Chan, Hardy S. O. ^{[2
]}

Ho, Peter K. H. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Phys, S-117542 Singapore, Singapore

[2] Natl Univ Singapore, Dept Chem, S-117543 Singapore, Singapore

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 25期

关键词：

D O I：

10.1063/1.2940592

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Stable rectifying molecular junctions have been obtained by sandwiching self-assembled monolayer films containing "push-pull" donor-pi-acceptor (D-pi-A) moieties between Au and poly(3,4-ethylenedioxythiophene) electrodes. These D-pi-A moieties possess moderate molecular dipoles, but assemble into films with nearly zero dipole moment due to adoption of high average tilt angles. Nevertheless reproducible and well-behaved rectifications (ratio up to 3.3) in the expected polarity were obtained. At low biases, the current-voltage characteristics follow Simmon's tunneling theory with reasonable barrier heights and an effective tunnel mass of similar to 0.5m(e). This suggests that asymmetric tunneling, and not carrier injection, is the origin of the rectification. (c) 2008 American Institute of Physics.

引用

页数：3

共 33 条

[1] Towards molecular electronics with large-area molecular junctions [J].

Akkerman, HB ;

Blom, PWM ;

de Leeuw, DM ;

de Boer, B .

NATURE, 2006, 441 (7089) :69-72

[2] Self-assembled-monolayer formation of long alkanedithiols in molecular junctions [J].

Akkerman, Hylke B. ;

Kronemeijer, Auke J. ;

van Hal, Paul A. ;

de Leeuw, Dago M. ;

Blom, Paul W. M. ;

de Boer, Bert .

SMALL, 2008, 4 (01) :100-104

[3] Controlled alignment of molecular diodes via ionic assembly of cationic donor-(π-bridge)-acceptor molecules on anionic surfaces [J].

Ashwell, GJ ;

Chwialkowska, A .

CHEMICAL COMMUNICATIONS, 2006, (13) :1404-1406

[4] Molecular rectification:: Self-assembled monolayers in which donor-(π-bridge)-acceptor moieties are centrally located and symmetrically coupled to both gold electrodes [J].

Ashwell, GJ ;

Tyrrell, WD ;

Whittam, AJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (22) :7102-7110

[5]

ASHWELL GJ, 1990, CHEM COMMUN, P1374

[6] MOLECULAR RECTIFIERS [J].

AVIRAM, A ;

RATNER, MA .

CHEMICAL PHYSICS LETTERS, 1974, 29 (02) :277-283

[7] Rectification and nonlinear optical properties of a Langmuir-Blodgett monolayer of a pyridinium dye [J].

Baldwin, JW ;

Amaresh, RR ;

Peterson, IR ;

Shumate, WJ ;

Cava, MP ;

Amiri, MA ;

Hamilton, R ;

Ashwell, GJ ;

Metzger, RM .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (47) :12158-12164

[8] 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

[9] Molecular rectification in a metal-insulator-metal junction based on self-assembled monolayers [J].

Chabinyc, ML ;

Chen, XX ;

Holmlin, RE ;

Jacobs, H ;

Skulason, H ;

Frisbie, CD ;

Mujica, V ;

Ratner, MA ;

Rampi, MA ;

Whitesides, GM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (39) :11730-11736

[10] Injection-induced De-doping in a conducting polymer during device operation: Asymmetry in the hole injection and extraction rates [J].

Chia, Perq-Jon ;

Chua, Lay-Lay ;

Sivaramakrishnan, Sankaran ;

Zhuo, Jing-Mei ;

Zhao, Li-Hong ;

Sim, Wee-Sun ;

Yeo, Yee-Chia ;

Ho, Peter K-H. .

ADVANCED MATERIALS, 2007, 19 (23) :4202-+

← 1 2 3 4 →