Fluorographene: A Wide Bandgap Semiconductor with Ultraviolet Luminescence

被引：405

作者：

Jeon, Ki-Joon ^{[1
]}

Lee, Zonghoon ^{[2
]}

Pollak, Elad ^{[1
]}

Moreschini, Luca

Bostwick, Aaron

Park, Cheol-Min ^{[1
,3
]}

Mendelsberg, Rueben ^{[4
]}

Radmilovic, Velimir ^{[2
]}

Kostecki, Robert ^{[1
]}

Richardson, Thomas J. ^{[1
]}

Rotenberg, Eli

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA

[3] Kumoh Natl Inst Technol, Sch Adv Mat & Syst Engn, Gumi 730701, Gyeongbuk, South Korea

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

ACS NANO | 2011年 / 5卷 / 02期

基金：

瑞士国家科学基金会;

关键词：

fluorographene; ultraviolet luminescence; wide bandgap semiconductor; NEXAFS; GRAPHENE;

D O I：

10.1021/nn1025274

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The manipulation of the bandgap of graphene by various means has stirred great interest for potential applications. Here we show that treatment of graphene with xenon difluoride produces a partially fluorinated graphene (fluorographene) with covalent C-F bonding and local sp(3)-carbon hybridization. The material was characterized by Fourier transform Infrared spectroscopy, Raman spectroscopy, electron energy loss spectroscopy, photoluminescence spectroscopy, and near edge X-ray absorption spectroscopy. These results confirm the structural features of the fluorographane with a bandgap of 3.8 eV, close to that calculated for fluorinated single layer graphene, (CF)(n). The material luminesces broadly in the UV and visible light regions, and has optical properties resembling diamond, with both excitonic and direct optical absorption and emission features. These results suggest the use of fluorographane as a new, readily prepared material for electronic, optoelectronic applications, and energy harvesting applications.

引用

页码：1042 / 1046

页数：5

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