Abstract
To achieve the modification of photonic band structures and realize the dispersion control toward functional photonic devices, composites of photonic crystal templates with high-refractive-index material are fabricated. A two-step process is used: 3D polymeric woodpile templates are fabricated by a direct laser writing method followed by chemical vapor deposition of MoS 2. We observed red-shifts of partial bandgaps at the near-infrared region when the thickness of deposited MoS 2 films increases. A ∼10 nm red-shift of fundamental and high-order bandgap is measured after each 1 nm MoS 2 thin film deposition and confirmed by simulations and optical measurements using an angle-resolved Fourier imaging spectroscopy system.
Original language | English |
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Pages (from-to) | 990-996 |
Number of pages | 7 |
Journal | ACS Applied Optical Materials |
Volume | 1 |
Issue number | 5 |
Early online date | 10 May 2023 |
DOIs | |
Publication status | Published - 26 May 2023 |
Keywords
- direct laser writing
- two-photon lithography
- chemical vapor deposition
- chalcogenide materials
- photonic bandgap
- three-dimensional photonic crystals