Optical properties of graphene film growing on a thin copper layer

• Опубліковано в: : Semiconductor Physics Quantum Electronics & Optoelectronics
• Дата: 2016
• Автори: Rozouvan, T.S., Poperenko, L.V., Kravets, V.G., Shaykevich, I.A.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2016
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/121525
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Optical properties of graphene film growing on a thin copper layer / T.S. Rozouvan, L.V. Poperenko, V.G. Kravets, I.A. Shaykevich // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2016. — Т. 19, № 1. — С. 57-61. — Бібліогр.: 13 назв. — англ.

Optical properties and surface structure of graphene films grown on thin 1-μm copper layer using the chemical vapor deposition method were investigated applying spectroscopic ellipsometry and nanoscopic measurements. Angle-variable ellipsometry measurements were performed to analyze features of optical conductivity and dispersion of the complex refraction index. Significant enhancement of the absorption band in the graphene single layer with respect to the bulk graphite was observed due to interaction between excited localized surface plasmon at the surface of thin Cu layer and graphene’s electrons. Scanning tunneling microscopy measurements with atomic spatial resolution revealed vertical crystal lattice structure of the deposited graphene layer. The obtained results provide direct evidence of the strong influence of the growth conditions on electronic and optical behavior of graphene films.