Near unity ultraviolet absorption in graphene without patterning

Enhancing the light–matter interaction of graphene is an important issue for related photonic devices and applications. In view of its potential ultraviolet applications, we aim to achieve extremely high ultraviolet absorption in graphene without any nanostructure or microstructure patterning. By ma...

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Published in:Applied physics letters 2018-04, Vol.112 (15)
Main Authors: Zhu, Jinfeng, Yan, Shuang, Feng, Naixing, Ye, Longfang, Ou, Jun-Yu, Liu, Qing Huo
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Language:English
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container_title Applied physics letters
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creator Zhu, Jinfeng
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description Enhancing the light–matter interaction of graphene is an important issue for related photonic devices and applications. In view of its potential ultraviolet applications, we aim to achieve extremely high ultraviolet absorption in graphene without any nanostructure or microstructure patterning. By manipulating the polarization and angle of incident light, the ultraviolet power can be sufficiently coupled to the optical dissipation of graphene based on single-channel coherent perfect absorption in an optimized multilayered thin film structure. The ultraviolet absorbance ratios of single and four atomic graphene layers are enhanced up to 71.4% and 92.2%, respectively. Our research provides a simple and efficient scheme to trap ultraviolet light for developing promising photonic and optoelectronic devices based on graphene and potentially other 2D materials.
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title Near unity ultraviolet absorption in graphene without patterning
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