Photocatalytic Oxidation in Few-Layer Tellurene for Loss-Invariant Integrated Photonic Resonance Trimming

Author(s)Mao, Dun
Author(s)Wang, Yixiu
Author(s)Lee, Hwaseob
Author(s)Chang, Lorry
Author(s)Wang, Feifan
Author(s)Wu, Darren
Author(s)Xiao, Yahui
Author(s)Sun, Boshu
Author(s)Ullah, Kaleem
Author(s)Booksh, Karl
Author(s)Wu, Wenzhuo
Author(s)Gu, Tingyi
Date Accessioned2023-06-28T13:06:44Z
Date Available2023-06-28T13:06:44Z
Publication Date2023-05-05
DescriptionThis is the peer reviewed version of the following article: Mao, D., Wang, Y., Lee, H., Chang, L., Wang, F., Wu, D., Xiao, Y., Sun, B., Ullah, K., Booksh, K., Wu, W., Gu, T., Photocatalytic Oxidation in Few-Layer Tellurene for Loss-Invariant Integrated Photonic Resonance Trimming. Adv. Optical Mater. 2023, 2300192. https://doi.org/10.1002/adom.202300192, which has been published in final form at https://doi.org/10.1002/adom.202300192. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. © 2023 Wiley-VCH GmbH. This article will be embargoed until 05/05/2024.
AbstractTwo-dimensional (2D) materials with unique physicochemical properties promote photocatalytic activities. As the 2D material composites research studies the statistical average of complex catalytic behaviors, an integrated photonic platform allows for clean and single flake level photo-catalytic investigations with precisely quantified photocatalytic activities. In this paper, fluence-dependent photo-oxidation in two-dimensional Tellurene (2D Te) is tracked by the evanescently coupled micro-resonator. Nearly 32% of oxidation is achieved in ≈10 nm 2D Te flake, compared to only 4.5% oxidation in a 30 nm sample, probed by the resonance shift in silicon micro-ring resonators substrate. The wider bandgap in the few layers of 2D Te allows faster charge transfer to adsorbed oxygen for a more efficient photocatalytic redox reaction. The photo-oxidation in hybrid 2D Te results in invariant lineshapes of optical transmission resonance for wavelength trimming (more than 3× resonance bandwidth). The low threshold power, near-infrared, and in-waveguide resonance trimming scheme is compatible with most integrated photonic setups for easy fixing of the nanofabrication-induced random resonance deviation for integrated photonic circuit applications in wavelength-division-multiplexing systems and spin qubits quantum computing.
SponsorThe authors greatly appreciated Prof. Matthew Doty from the Department of Materials Science and Engineering at the University of Delaware for valuable discussions. This work was supported by the Army Research Office (W911NF-20-1-0078).
CitationMao, D., Wang, Y., Lee, H., Chang, L., Wang, F., Wu, D., Xiao, Y., Sun, B., Ullah, K., Booksh, K., Wu, W., Gu, T., Photocatalytic Oxidation in Few-Layer Tellurene for Loss-Invariant Integrated Photonic Resonance Trimming. Adv. Optical Mater. 2023, 2300192. https://doi.org/10.1002/adom.202300192
ISSN2195-1071
URLhttps://udspace.udel.edu/handle/19716/32952
Languageen_US
PublisherAdvanced Optical Materials
Keywordsintegrated photonics
Keywordsmicro-ring resonators
Keywordsphoto-oxidation
Keywordstellurium
Keywordstwo-dimensional materials
Keywordswavelength trimming
TitlePhotocatalytic Oxidation in Few-Layer Tellurene for Loss-Invariant Integrated Photonic Resonance Trimming
TypeArticle
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