ITO–TiN–ITO Sandwiches for Near-Infrared Plasmonic Materials
- Chaonan Chen (4799745)
- Zhewei Wang (4799742)
- Ke Wu (320733)
- Haining Chong (5121407)
- Zemin Xu (5121410)
- Hui Ye (164331)
DOIAbstract
Indium tin oxide (ITO)-based sandwich structures with the insertion of ultrathin (<10 nm) titanium nitride (TiN) are investigated as near-infrared (NIR) plasmonic materials. The structural, electrical, and optical properties reveal the improvement of the sandwich structures stemmed from TiN insertion. TiN is a well-established alternative to noble metals such as gold, elevating the electron conductivity of sandwich structures as its thickness increases. Dielectric permittivities of TiN and top ITO layers show TiN-thickness-dependent properties, which lead to moderate and tunable effective permittivities for the sandwiches. The surface plasmon polaritons (SPP) of the ITO–TiN–ITO sandwich at the telecommunication window (1480–1570 nm) are act...
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