Conformal CVD-grown MoS2 on Three-dimensional Woodpile Photonic Crystals for Photonic Bandgap Engineering

Mike Taverne, Xu Zheng, Yu-Shao Jacky Chen, Katrina A. Morgan, Lifeng Chen, Nadira Meethale Palakkool, Daniel Rezaie, Habib Awachi, John G. Rarity, Daniel W. Hewak, Chung-Che Huang, Ying-Lung Daniel Ho*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


To achieve the modification of photonic band structures and realise the dispersion control towards 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 direct laser writing method followed by chemical vapour deposition of MoS2. We observed red shifts of partial bandgaps at the near-infrared region when the thickness of deposited MoS2 films increases. A ∼ 10nm red shift of fundamental and high order bandgap is measured after each 1 nm MoS2 thin film deposition and confirmed by simulations and optical measurements using angle-resolved Fourier imaging spectroscopy system.
Original languageEnglish
JournalACS Applied Optical Materials
Publication statusAccepted/In press - 25 Apr 2023

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