Photoluminescence and Raman studies of graphene thin films prepared by reduction of graphene oxide

被引：177

作者：

Cuong, Tran Viet ^{[1
]}

Pham, Viet Hung ^{[1
]}

Tran, Quang Trung ^{[2
]}

Hahn, Sung Hong ^{[3
]}

Chung, Jin Suk ^{[1
]}

Shin, Eun Woo ^{[1
]}

Kim, Eui Jung ^{[1
]}

机构：

[1] Univ Ulsan, Dept Chem Engn, Ulsan 680749, South Korea

[2] Ho Chi Minh City Univ Nat Sci, Fac Phys, Dept Solid State Phys, Ho Chi Minh City, Vietnam

[3] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 03期

关键词：

Graphene oxide; Thin films; Luminescence; Optical materials and properties; GRAPHITE OXIDE; FUNCTIONALIZED GRAPHENE; NANOSHEETS; CARBON;

D O I：

10.1016/j.matlet.2009.11.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoluminescence (PL) and Raman studies have been performed to investigate the optical properties of graphene thin films prepared by chemical and thermal reductions of graphene oxide (GO). The G peak in Raman spectra red-shifted after reduction of GO. Thermal reduction resulted in a more red-shift of the G peak than chemical reduction. A strong intensity of the D peak indicated that the prepared graphene films have significant structural disorders. A blue-shifted emission in PL spectra suggested that sp(2) clusters are embedded in a sp(3) matrix that acts as a tunnel barrier, causing a strong fluctuation in the local band gap. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：399 / 401

页数：3

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