Graphene-based wideband metamaterial absorber for solar cells application

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Rufangura P., Sabah C.

JOURNAL OF NANOPHOTONICS, vol.11, no.3, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.1117/1.jnp.11.036008
  • Journal Name: JOURNAL OF NANOPHOTONICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: metamaterial, absorber, wideband, graphene, solar cells, INFRARED PERFECT ABSORBER, POLARIZATION, DESIGN, ENHANCEMENT, ABSORPTION
  • Middle East Technical University Affiliated: Yes

Abstract

A wideband metamaterial (MTM) absorber based on a concentric ring resonator is discussed at visible frequencies. The proposed structure offers a wideband absorption response, where absorption of >70% is gained for the frequency ranging from 537.91 to 635.73 THz. The analysis is conducted on the components of the proposed structure to understand the origin of wideband absorption. Furthermore, a graphene monolayer sheet is integrated to the proposed MTM absorber to optimize its absorptivity, where the studies show enhancement of the absorptivity of the proposed structure up to 26% from its initial absorptivity. MTM absorbers of this kind have potential applications in solar cells. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)