UV-LIGHT-ASSISTED OXIDATIVE sp3 HYBRIDIZATION OF GRAPHENE

被引：41

作者：

Guenes, Fethullah ^{[1
]}

Han, Gang Hee

Shin, Hyeon-Jin

Lee, Si Young

Jin, Meihua

Duong, Dinh Loc

Chae, Seung Jin

Kim, Eun Sung

Yao, Fei

Benayad, Anass

Choi, Jae-Young

Lee, Young Hee

机构：

[1] Sungkyunkwan Univ, Sungkyunkwan Adv Inst Nanotechnol, Dept Energy Sci,Graphene Ctr, Ctr Nanotubes & Nanostruct Composites,Phys Div BK, Suwon 440746, South Korea

来源：

NANO | 2011年 / 6卷 / 05期

关键词：

Graphene oxide; UV-light; transition from metallic to insulator; transparent conducting films; HIGH-QUALITY GRAPHENE; GRAPHITE OXIDE; ELECTRONICS; FILM; SIO2;

D O I：

10.1142/S1793292011002780

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the transformation of electronic structures of sp(2) graphene to sp(3) graphene by UV-light-assisted oxidation. Two distinctive oxidation mechanisms were observed during this metal-insulator transition: (i) At low-oxidation regime, p-doping behavior by oxygen species extracting electrons from graphene and (ii) at high-oxidation regime, n-doping behavior by electron-hopping via strongly localized oxide states. We also found that the dominant oxygen-related functional group by UV-light-assisted oxidation was an epoxide group rather than hydroxyl group, which differed from conventional graphite oxide.

引用

页码：409 / 418

页数：10

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