Ultra-thin titanium nitride films for refractory spectral selectivity

Alexander Roberts, Manohar Chirumamilla, Deyong Wang, Liqiong An, Kjeld Pedersen, N. Asger Mortensen, Sergey I. Bozhevolnyi

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

28 Citationer (Scopus)


We demonstrate a selectively emitting optical Fabry-Pérot resonator based on a few-nm-thin continuous metallic titanium nitride film, separated by a dielectric spacer, which exhibits excellent stability at 1070 K against chemical degradation, thin-film instabilities and melting point depression. The structure paves the way to the design and fabrication of refractory thermal emitters using the well-established processes known from the field of multilayer and rugate optical filters. We demonstrate that a few-nanometer thick films of titanium nitride can be stable under operation at temperatures exceeding 1070 K. This type of selective emitter provides a means towards near-infrared thermal emission that could potentially be tailored to the accuracy level known from rugate optical filters.
TidsskriftOptical Materials Express
Udgave nummer12
Sider (fra-til)3717-3728
Antal sider12
StatusUdgivet - 2018