Open Access
Table 1
Comparison of works on the broadband absorbers in the NMIR range in recent years.
| Works | Device configuration | ΔB (μm) |
|
FOM (μm) | Tuning method | h(λ) × ΔB (μm) | Materials involved | Maximum incidence angle |
|---|---|---|---|---|---|---|---|---|
| [29] | MIM tri-layer | 0.4–2 (1.6) | 91.4% | 0.82 | N/A | N/A | Ti, SiO2, Ti | 50° |
| [14] | MIM tri-layer | 0.1–1.9 (1.8) | 93.2% | 1.67 | N/A | N/A | Ti, W, SiO2, Au | 45° |
| [43] | Planar layered thin film structures | 2–5 (3) | 85.3% | 2.55 | Thermal | 1.8 | Sapphire, VO2, PMMA, Au | 60° |
| [44] | L-shaped hybrid nanostructures MIM tri-layer | 4.5–6.5 (2) | 92.4% | 1.84 | Thermal | 1.54 | Au, VO2, Au | N/A |
| [28] | Patterned plasmonic metasurface MIM tri-layer | 1.6–4.7 (3.1) | 93.7% | 2.9 | Thermal | 1.92 | Cr, VO2 | 60° |
| [45] | Hybrid nanodisc array MIM tri-layer | 0.7–1.8 (1.1) | 87.6% | 0.96 | Thermal | 0.7 | Au, VO2, Au | 70° |
| [42] | Nanocolumn array | 2–4.8 (2.8) | 95.5% | 2.67 | Thermal | 1.4 | VO2, SiO2, W, Al2O3 | 50° |
| Our work | Hybrid multi-layer nanostructure | 1.5–8 (6.5) | 94.7% | 6.15 | Thermal | 3.35 | VO2, SiO2, Ti | 60° |
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