Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Holey graphene with enhanced near-infrared absorption : Experimental and DFT study. / Sedelnikova, O. V.; Stolyarova, S. G.; Chuvilin, A. L. и др.
в: Applied Physics Letters, Том 114, № 9, 091901, 04.03.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Holey graphene with enhanced near-infrared absorption
T2 - Experimental and DFT study
AU - Sedelnikova, O. V.
AU - Stolyarova, S. G.
AU - Chuvilin, A. L.
AU - Okotrub, A. V.
AU - Bulusheva, L. G.
PY - 2019/3/4
Y1 - 2019/3/4
N2 - In this report, we use optical absorption spectroscopy and density functional theory simulations to investigate the optical behavior of a graphitic material with nanoscale holes. The material, produced by heating of graphite oxide in concentrated sulfuric acid followed by annealing at 1000 °C, demonstrated enhanced near-infrared absorption as compared to the pristine graphitic material. The computational study of graphene models containing holes of different sizes and different edge terminations revealed the major interband transitions defining the peaks in the absorption spectra. Our results suggest that the enhancement of near-infrared absorption of the material is caused by electron excitations involving hole edge states. The optical spectrum is strongly dependent on the distance between the holes and almost independent of both hole sizes and the functionalization family.
AB - In this report, we use optical absorption spectroscopy and density functional theory simulations to investigate the optical behavior of a graphitic material with nanoscale holes. The material, produced by heating of graphite oxide in concentrated sulfuric acid followed by annealing at 1000 °C, demonstrated enhanced near-infrared absorption as compared to the pristine graphitic material. The computational study of graphene models containing holes of different sizes and different edge terminations revealed the major interband transitions defining the peaks in the absorption spectra. Our results suggest that the enhancement of near-infrared absorption of the material is caused by electron excitations involving hole edge states. The optical spectrum is strongly dependent on the distance between the holes and almost independent of both hole sizes and the functionalization family.
KW - OPTICAL-PROPERTIES
KW - NANOPERFORATED GRAPHENE
KW - GRAPHITE OXIDE
KW - DENSITY
UR - http://www.scopus.com/inward/record.url?scp=85062627038&partnerID=8YFLogxK
U2 - 10.1063/1.5080617
DO - 10.1063/1.5080617
M3 - Article
AN - SCOPUS:85062627038
VL - 114
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 9
M1 - 091901
ER -
ID: 18815370