A study on near-UV blue photoluminescence in graphene oxide prepared by Langmuir-Blodgett method

被引：17

作者：

Han, Feng ^{[1
]}

Yang, Shuming ^{[1
]}

Jing, Weixuan ^{[1
]}

Jiang, Zhuangde ^{[1
]}

Liu, Huan ^{[1
]}

Li, Lei ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2015年 / 345卷

基金：

中国国家自然科学基金;

关键词：

Photoluminescence; Graphene oxide films; Langmuir-Blodgett method; GRAPHITE OXIDE; FILMS; REDUCTION;

D O I：

10.1016/j.apsusc.2015.01.214

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The paper reports a study on a near-UV blue photoluminescence (PL) in graphene oxide (GO) films prepared by Langmuir-Blodgett (LB)-based method. GO films was reduced into reduced-graphene oxide (rGO) through thermal process at 800 degrees C. The surface morphology of both GO and rGO is characterized by atomic force microscope (AFM) and scanning electron microscope (SEM). X-ray photoelectron spectroscopy (XPS) analysis shows the largely restoration of graphitic domains in GO after reduction. The photoluminescence (PL) of rGO shows the near-UV blue emission, which is blueshifted along with luminescent decreased as compared to GO. This blueshift and decrease in PL is mainly due to the newly formed sp(2) clusters in rGO, which established percolation pathways between the sp(2) clusters already present. (C) 2015 Published by Elsevier B.V

引用

页码：18 / 23

页数：6

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