TY  - JOUR
AU  - Potorochin, Dmitrii
AU  - Chaika, Alexander N.
AU  - Molodtsova, Olga
AU  - Aristov, Victor
AU  - Marchenko, Dmitry E.
AU  - Smirnov, Dmitry A.
AU  - Makarova, Anna A.
AU  - Walls, Brian
AU  - Zhussupbekov, Kuanysh
AU  - Walshe, Killian
AU  - Shvets, Igor V.
AU  - Ciobanu, Anca Simona
AU  - Rabchinskii, Maxim K.
AU  - Ulin, Nikolai V.
AU  - Baidakova, Marina V.
AU  - Brunkov, Pavel N.
AU  - Molodtsov, Serguei
TI  - Surface functionalization of few-layer graphene on β -SiC(001) by Neutral Red dye
JO  - Applied surface science
VL  - 585
SN  - 0169-4332
CY  - Amsterdam
PB  - Elsevier
M1  - PUBDB-2022-01333
SP  - 152542
PY  - 2022
AB  - Few-layer graphene on -SiC(001) functionalized with phenazine dye Neutral Red by means of diazonium chemistry has been studied using X-ray photoelectron spectroscopy, near-edge X-ray absorption fine structure, photoemission electron microscopy, scanning tunneling microscopy, and density functional theory calculations. The experimental data reveal the formation of a composite phenazine dye/graphene structure with a large energy gap. The molecules in this structure can be oriented both parallel and perpendicular to the graphene surface. According to scanning tunneling spectroscopy and theoretical calculations, the density of electron states in different surface areas depends on the local short-range order and the molecules’ environment. On the other hand, the photoemission spectroscopy study shows that the bottom layers of the few-layer graphene remain intact, which inherently makes the synthesized layered composite a low-dimensional metal/semiconductor heterostructure. In addition, photoemission electron microscopy imaging shows a high homogeneity of the dye-modified graphene on a micrometer scale.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000784440300001
DO  - DOI:10.1016/j.apsusc.2022.152542
UR  - https://bib-pubdb1.desy.de/record/475352
ER  -