TY - JOUR
T1 - Growth of Single-sided ZnO nanocombs/ML graphene Heterostructures
AU - Al-Ruqeishi, Majid S.
AU - Mohiuddin, Tariq
N1 - Publisher Copyright:
© 2015 The Authors
PY - 2019/12
Y1 - 2019/12
N2 - We report catalyst-free growth of high-density single-sided ZnO nanocombs for the first time on a multi-layer graphene (MLG). Structural analysis based on scanning electron microscope reveals the nanocomb ribbon average diameter and length are about 90–600 nm and 5–60 μm, respectively, while the diameter and length of the comb tooth are about 30–100 nm and 100–700 nm respectively. In general, the length of the teeth decreases gradually from one end of the nanocomb ribbon to another. ZnO crystal growth seems to involve two steps which are the formation of Zn buffer layer/graphene, which works as growth nucleation sites and long nanowires ends with nanocombs structure. Raman and PL optical transitions prove the well-faceted hexagonal structure of ZnO nanocombs as well as the existence of defects such as O vacancies and Zn interstitials. Graphene-based inorganic hybrid nanostructures provide several potential applications in optoelectronics and nanoscale electronics such as nanogenerators, photovoltaic devices, optical devices, and photodetectors.
AB - We report catalyst-free growth of high-density single-sided ZnO nanocombs for the first time on a multi-layer graphene (MLG). Structural analysis based on scanning electron microscope reveals the nanocomb ribbon average diameter and length are about 90–600 nm and 5–60 μm, respectively, while the diameter and length of the comb tooth are about 30–100 nm and 100–700 nm respectively. In general, the length of the teeth decreases gradually from one end of the nanocomb ribbon to another. ZnO crystal growth seems to involve two steps which are the formation of Zn buffer layer/graphene, which works as growth nucleation sites and long nanowires ends with nanocombs structure. Raman and PL optical transitions prove the well-faceted hexagonal structure of ZnO nanocombs as well as the existence of defects such as O vacancies and Zn interstitials. Graphene-based inorganic hybrid nanostructures provide several potential applications in optoelectronics and nanoscale electronics such as nanogenerators, photovoltaic devices, optical devices, and photodetectors.
KW - Chemical vapor deposition
KW - Graphene–semiconductor hybrid
KW - Photoluminescence
KW - ZnO nanocombs
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U2 - 10.1016/j.arabjc.2015.06.007
DO - 10.1016/j.arabjc.2015.06.007
M3 - Article
AN - SCOPUS:84931455818
SN - 1878-5352
VL - 12
SP - 2774
EP - 2781
JO - Arabian Journal of Chemistry
JF - Arabian Journal of Chemistry
IS - 8
ER -