| 초록 |
Light absorber based on plasmonic materials can be used as thermophotovoltaics, energy harvesting, and sensing devices. Noble metal based light absorbers are vulnerable to heat. For these reason, refractory plasmonics using refractory metals and nitride s such as chromium, tungsten, and titanium nitride have been introduced. Among them, TiN has been utilized to replace gold as solar heat generators and photodetectors because its comparable plasmonic properties in the visible and NIR regimes, better heating efficiency. For the practical applications, we fabricated TiN based nanoring structures over a large area using multiple patterning of colloidal lithography. The absorber shows broadband (300-900 nm) and efficient (95.3 %) absorption. This broadband TiN absorber will have application in high temperature photonic devices such as solar thermophotovoltaics and optical circuits. |
