论文标题
引入对石墨烯反射的校正，通过光发射
Introducing Corrections to the Reflectance of Graphene by Light Emission
论文作者
论文摘要
单层石墨烯吸收2.3％的可见光。这种“小”吸收已被用来强调石墨烯的视觉透明度，但实际上意味着多层石墨烯吸收了大量的入射光，这会导致不可忽略的荧光。在本文中，我们使用转移矩阵方法制定了由数十个层组成的多层石墨烯的光发射特性，并通过实验确认该方法的有效性。我们可以定量地解释在SIO $ _2 $/SI底物上多层石墨烯的测量对比度，并发现相当大的校正（不能被归类为不相互的光排放），以反射可见光。新组件源自每个石墨烯层吸收引起的相干发射。因此，多层石墨烯可作为各种波长的部分相干光源，并且可能具有表面发射激光应用。
Monolayer graphene absorbs 2.3 percent of the incident visible light. This 'small' absorption has been used to emphasize the visual transparency of graphene, but it in fact means that multilayer graphene absorbs a sizable fraction of incident light, which causes non-negligible fluorescence. In this paper, we formulate the light emission properties of multilayer graphene composed of tens to hundreds of layers using a transfer matrix method and confirm the method's validity experimentally. We could quantitatively explain the measured contrasts of multilayer graphene on SiO$_2$/Si substrates and found sizable corrections, which cannot be classified as incoherent light emissions, to the reflectance of visible light. The new component originates from coherent emission caused by absorption at each graphene layer. Multilayer graphene thus functions as a partial coherent light source of various wavelengths, and it may have surface-emitting laser applications.
