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Large-Area, Cost-Effective, Ultra-Broadband Perfect Absorber Utilizing Manganese In Metal-Insulator-Metal Structure
- Source :
- Scientific Reports, Scientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)
- Publication Year :
- 2018
- Publisher :
- Aperta, 2018.
-
Abstract
- Achieving broadband absorption has been a topic of intensive research over the last decade. However, the costly and time consuming stage of lithography has always been a barrier for the large-area and mass production of absorbers. In this work, we designed, fabricated, and characterized a lithography-free, large-area compatible, omni-directional, ultra-broadband absorber that consists of the simplest geometrical configuration for absorbers: Metal-Insulator-Metal (MIM). We introduced and utilized Manganese (Mn) for the first time as a very promising metal for broadband absorption applications. We optimized the structure step-by-step and compared Mn against the other best candidates introduced so far in broadband absorption structures and showed the better performance of Mn compared to them. It also has the advantage of being cheaper compared to metals like gold that has been utilized in many patterned broadband absorbers. We also presented the circuit model of the structure. We experimentally achieved over 94 percent average absorption in the range of 400–900 nm (visible and above) and we obtained absorption as high as 99.6 percent at the wavelength of 626.4 nm. We also experimentally demonstrated that this structure retains broadband absorption for large angles up to 70 degrees.
- Subjects :
- Materials science
lcsh:Medicine
chemistry.chemical_element
02 engineering and technology
Metal-insulator-metal
Manganese
01 natural sciences
Article
010309 optics
Metal
0103 physical sciences
Broadband
lcsh:Science
Absorption (electromagnetic radiation)
Lithography
Multidisciplinary
business.industry
lcsh:R
Metamaterial
021001 nanoscience & nanotechnology
Wavelength
chemistry
visual_art
visual_art.visual_art_medium
Optoelectronics
lcsh:Q
0210 nano-technology
business
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Scientific Reports, Scientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)
- Accession number :
- edsair.doi.dedup.....78e4ec4f7a40fe7a219b6cbb84ce80c0