Optically and electrically tunable graphene quantum dot-polyaniline composite films

被引：55

作者：

Luk, C. M. ^{[1
,2
]}

Chen, B. L. ^{[1
,2
]}

Teng, K. S. ^{[3
]}

Tang, L. B. ^{[1
,2
]}

Lau, S. P. ^{[1
,2
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Polytech Univ, Res Inst, Shenzhen 518057, Peoples R China

[3] Swansea Univ, Coll Engn, Multidisciplinary Nanotechnol Ctr, Swansea SA2 8PP, W Glam, Wales

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2014年 / 2卷 / 23期

基金：

中国国家自然科学基金;

关键词：

CONDUCTIVITY; HYSTERESIS;

D O I：

10.1039/c4tc00498a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene quantum dot-polyaniline (PANI-GQD) composite films were synthesized by a chemical oxidation polymerization process. The optical properties of the PANI-GQD composite were studied by varying the mole concentration of PANI and the size of the GQDs. The Au/PANI-GQDs/ITO sandwich device was fabricated in order to investigate the transport properties of the composite. A stable hysteresis loop was observed in response to the applied voltage. By varying the PANI content and size of the GQDs, the area within the hysteresis loop and electrical conductance behavior of the device can be tuned in a controlled manner. Both the tunable luminescence and electrical hysteresis behavior are attributed to surface states of the GQDs. The PANI-GQD composite films are expected to find application in photonic devices.

引用

页码：4526 / 4532

页数：7

共 45 条

[1] Nanoparticle polymer composites: Where two small worlds meet [J].