Formation of a rectifier with gold nanoclusters: X-ray reflectivity and atomic force microscopy measurements

被引：13

作者：

Pal, S

Sanyal, MK

John, NS

Kulkarni, GU

机构：

[1] Saha Inst Nucl Phys, Surface Phys Div, Kolkata 700064, W Bengal, India

[2] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.71.121404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate that monolayer and bilayer films of thiol-capped gold nanoclusters can exhibit prominent rectification properties, provided spatial asymmetry exists between the two tunnel junctions used to connect the nanoclusters. Systematic x-ray reflectivity and atomic force microscopy (AFM) measurements were carried out to characterize the spatial asymmetry introduced by a monolayer of fatty acid salt used to deposit thiol-capped gold nanoclusters on a hydrophilic SiO2-Si(001) substrate using the Langmuir-Blodgett technique. Current-voltage characteristics, obtained from conducting probe AFM measurements, show rectification ratios of 13.5 and 364.8 for the monolayer and bilayer films, respectively.

引用

页数：4

共 17 条

[1] Charge transfer on the nanoscale: Current status [J].

Adams, DM ;

Brus, L ;

Chidsey, CED ;

Creager, S ;

Creutz, C ;

Kagan, CR ;

Kamat, PV ;

Lieberman, M ;

Lindsay, S ;

Marcus, RA ;

Metzger, RM ;

Michel-Beyerle, ME ;

Miller, JR ;

Newton, MD ;

Rolison, DR ;

Sankey, O ;

Schanze, KS ;

Yardley, J ;

Zhu, XY .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (28) :6668-6697

[2] MOLECULAR RECTIFIERS [J].

AVIRAM, A ;

RATNER, MA .

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

[3] Spin-dependent tunneling in self-assembled cobalt-nanocrystal superlattices [J].

Black, CT ;

Murray, CB ;

Sandstrom, RL ;

Sun, SH .

SCIENCE, 2000, 290 (5494) :1131-1134

[4]

Haberlen OD, 1997, J CHEM PHYS, V106, P5189, DOI 10.1063/1.473518

[5] Electronic structure of passivated Au38(SCH3)24 nanocrystal [J].

Häkkinen, H ;

Barnett, RN ;

Landman, U .

PHYSICAL REVIEW LETTERS, 1999, 82 (16) :3264-3267

[6] Current rectification by molecules with asymmetric tunneling barriers [J].

Kornilovitch, PE ;

Bratkovsky, AM ;

Williams, RS .

PHYSICAL REVIEW B, 2002, 66 (16) :1-11

[7] Theory of electrical rectification in a molecular monolayer [J].

Krzeminski, C ;

Delerue, C ;

Allan, G ;

Vuillaume, D ;

Metzger, RM .

PHYSICAL REVIEW B, 2001, 64 (08)

[8] Molecular rectifying diodes from self-assembly on silicon [J].

Lenfant, S ;

Krzeminski, C ;

Delerue, C ;

Allan, G ;

Vuillaume, D .

NANO LETTERS, 2003, 3 (06) :741-746

[9] MOLECULAR RECTIFIER [J].

MARTIN, AS ;

SAMBLES, JR ;

ASHWELL, GJ .

PHYSICAL REVIEW LETTERS, 1993, 70 (02) :218-221

[10] Unimolecular electrical rectification in hexadecylquinolinium tricyanoquinodimethanide [J].

Metzger, RM ;

Chen, B ;

Hopfner, U ;

Lakshmikantham, MV ;

Vuillaume, D ;

Kawai, T ;

Wu, XL ;

Tachibana, H ;

Hughes, TV ;

Sakurai, H ;

Baldwin, JW ;

Hosch, C ;

Cava, MP ;

Brehmer, L ;

Ashwell, GJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (43) :10455-10466

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