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

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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 languageEnglish
Pages (from-to)990-996
Number of pages7
JournalACS Applied Optical Materials
Volume1
Issue number5
Early online date10 May 2023
DOIs
Publication statusPublished - 26 May 2023

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