Transient Optical and Terahertz Spectroscopy of Nanoscale Films of RuO₂.

ABSTRACT: Solution-deposited nanoscale films of RuO₂ ("nanoskins") are effective transparent conductors once calcined to 200 °C. Upon heating the nanoskins to higher temperature the nanoskins show increased transmission at 550 nm. Electronic microscopy and X-ray diffraction show that the changes in the optical spectrum are accompanied by the formation of rutile RuO₂ nanoparticles. The mechanism for the spectral evolution is clearly observed with ultrafast optical measurements. Following excitation at 400 nm, nanoskins calcined at higher temperatures show increased transmission above 650 nm, consistent with the photobleaching of a surface-plasmon resonance (SPR) band. Calculations based on the optical constants of RuO₂ substantiate the presence of SPR absorption. Shee

SUBMITTER: Dunkelberger A 

PROVIDER: S-EPMC5424710 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature