Abstract Time dynamics of doping and strain induced in single layer graphene by thermal treatments up to 300°C in vacuum, nitrogen, carbon dioxide and oxygen controlled atmosphere are deeply studied by Raman spectroscopy and they are compared with its morphological evolution investigated by Atomic Force Microscopy. The reaction dynamics in oxygen treatments is determined down to a time scale of few minutes as well as that of dedoping process made by water vapor treatment. The interplay of strain modification and doping effects is separated. The strain is clarified to be strongly influenced by the cooling time. The doping removal is dominated by the water vapor, showing that the concentration of molecular water in gas phase governs the process rate. The opportune choice of heating/cooling and atmosphere enables to tune selectively the strain or doping.

中文翻译：

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可控气氛中热处理引起的单层石墨烯掺杂和应变动力学

摘要 通过拉曼光谱深入研究了在真空、氮气、二氧化碳和氧气控制的气氛中通过高达 300°C 的热处理在单层石墨烯中引起的掺杂和应变的时间动力学，并将它们与原子力显微镜研究的形态演变进行了比较。 . 氧气处理中的反应动力学确定到几分钟的时间尺度以及通过水蒸气处理进行的去掺杂过程。应变修改和掺杂效应的相互作用是分开的。应变被澄清受冷却时间的强烈影响。掺杂去除主要由水蒸气控制，表明气相中分子水的浓度决定了工艺速率。