The band structure of graphene oxide examined using photoluminescence spectroscopy

Content Provider	Semantic Scholar
Author	Liang, Hongbin Smith, Christopher Mills, Christopher A. Silva, S. R. P.
Copyright Year	2015
Abstract	Photoluminescence (PL) spectra have been used to elucidate the band structure of graphene oxide (GO) reduced in aqueous solution. The GO reduction is measured in situ via the identification of four PL peaks produced from GO solutions with different concentrations. Using corresponding UV-visible and photoluminescence excitation (PLE) spectroscopy, and on progressing from high energy to low energy transitions, the four PL peaks are identified as σ–σ* and π–π* transitions, a π band tail due to oxygen localized states, and a π band tail due to trapped water, respectively. The labeling of the band structure has been used to challenge the prevailing assignation of the low energy transitions, reported in the literature, to molecular σ–σ* and π–π* transitions alone.
Starting Page	12484
Ending Page	12491
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1039/C5TC00307E
Volume Number	3
Alternate Webpage(s)	http://epubs.surrey.ac.uk/813587/1/The%20band%20structure%20of%20graphene%20oxide%20examined%20using%20photoluminescence%20spectroscopy.pdf
Alternate Webpage(s)	https://pubs.rsc.org/en/content/articlepdf/2015/tc/c5tc00307e
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article