Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10520
Title: Fabrication of covalently functionalized graphene oxide incorporated solid-state hybrid silica gel glasses and their improved nonlinear optical response
Authors: Tao, L
Zhou, B
Bai, G
Wang, Y
Yu, SF 
Lau, SP 
Tsang, YH 
Yao, J
Xu, D
Issue Date: 2013
Publisher: American Chemical Society
Source: Journal of physical chemistry C, 2013, v. 117, no. 44, p. 23108-23116 How to cite?
Journal: Journal of physical chemistry C 
Abstract: Solid-state graphene oxide (GO) homogeneously incorporated silica gel glasses have been successfully fabricated, and the good nonlinear optical (NLO) response shown indicates its high potential as the optical limiting material to protect optical detectors and human eyes from damage caused by high power lasers. The GO sheets are covalently functionalized with 3- aminopropyltriethoxysilane and connected to the silica glass matrix through Si-O bonding, resulting in an increase in GO incorporation concentration up to 20.2 mol % (C/SiO2) without reaching the saturation limit. Digital images and element mapping analysis of carbon have confirmed the homogeneous dispersion of GO in the silica gel glass. Because of the higher two-photon absorption coefficient, lower NLO starting threshold, and optical limiting threshold shown at 532 nm wavelength, the NLO performance at this wavelength is better than at 1064 nm. At an input fluence as low as 1.3 J cm-2 at 532 nm and 2.3 J cm-2 at 1064 nm, the glass incorporated with 5.1 mol % GO starts to exhibit an NLO response, suggesting its potential as a laser optical limiting absorber. In addition to the discussion of the probable reasons behind the phenomenon, it has been demonstrated for the first time that the NLO performance of GO in solid-state silica gel glass is stronger than in deionized water.
URI: http://hdl.handle.net/10397/10520
ISSN: 1932-7447
EISSN: 1932-7455
DOI: 10.1021/jp404463g
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

19
Last Week
0
Last month
1
Citations as of Sep 22, 2017

WEB OF SCIENCETM
Citations

20
Last Week
0
Last month
0
Citations as of Sep 22, 2017

Page view(s)

52
Last Week
1
Last month
Checked on Sep 25, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.