Fully CMOS-compatible titanium nitride nanoantennas
- Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, California 94305 (United States)
- 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
Similar Records
Temperature-dependent optical properties of titanium nitride
3D Hybrid Plasmonic Framework with Au Nanopillars Embedded in Nitride Multilayers Integrated on Si
Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
ELECTRON BEAMS
EPITAXY
FABRICATION
HARDNESS
INFORMATION
MAGNESIUM OXIDES
MELTING POINTS
OPTICAL PROPERTIES
OXYGEN
PLASMA
PROCESSING
SCATTERING
SERVICE LIFE
SILICON
SILICON OXIDES
SPECTROSCOPY
TITANIUM NITRIDES
WEAR RESISTANCE