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Title: Fully CMOS-compatible titanium nitride nanoantennas

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4941413· OSTI ID:22489390
; ;  [1]; ;  [2]
  1. Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, California 94305 (United States)
  2. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, California 94305 (United States)

CMOS-compatible fabrication of plasmonic materials and devices will accelerate the development of integrated nanophotonics for information processing applications. Using low-temperature plasma-enhanced atomic layer deposition (PEALD), we develop a recipe for fully CMOS-compatible titanium nitride (TiN) that is plasmonic in the visible and near infrared. Films are grown on silicon, silicon dioxide, and epitaxially on magnesium oxide substrates. By optimizing the plasma exposure per growth cycle during PEALD, carbon and oxygen contamination are reduced, lowering undesirable loss. We use electron beam lithography to pattern TiN nanopillars with varying diameters on silicon in large-area arrays. In the first reported single-particle measurements on plasmonic TiN, we demonstrate size-tunable darkfield scattering spectroscopy in the visible and near infrared regimes. The optical properties of this CMOS-compatible material, combined with its high melting temperature and mechanical durability, comprise a step towards fully CMOS-integrated nanophotonic information processing.

OSTI ID:
22489390
Journal Information:
Applied Physics Letters, Vol. 108, Issue 5; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English

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Broadband Hot-Electron Collection for Solar Water Splitting with Plasmonic Titanium Nitride journal March 2017
Large-Area Ultrabroadband Absorber for Solar Thermophotovoltaics Based on 3D Titanium Nitride Nanopillars journal September 2017
Strontium Niobate for Near‐Infrared Plasmonics journal July 2019
Tunable plasmonic HfN nanoparticles and arrays journal January 2019
Temperature-dependent optical properties of titanium nitride journal March 2017
Chiro-plasmonic refractory metamaterial with titanium nitride (TiN) core–shell nanohelices journal April 2018
Wrinkled titanium nitride nanocomposite for robust bendable electrodes journal September 2019
Characterization of CMOS metal based dielectric loaded surface plasmon waveguides at telecom wavelengths journal January 2017
Highly Plasmonic Titanium Nitride by Room-Temperature Sputtering journal October 2019