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transient optical and terahertz spectroscopy of nanoscale films of ruo2
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نویسنده
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dunkelberger adam d. ,compton ryan ,desario paul a. ,weidinger daniel ,spann bryan t. ,pala irina r. ,chervin christopher n. ,rolison debra r. ,bussmann konrad ,cunningham paul d. ,melinger joseph s. ,alberding brian g. ,heilweil edwin j. ,owrutsky jeffrey c.
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منبع
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plasmonics - 2017 - دوره : 12 - شماره : 3 - صفحه:743 -750
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چکیده
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Solution-deposited nanoscale films of ruo2 (nanoskins) are effective transparent conductors once calcined to 200 °c. upon heating to higher temperatures, the nanoskins show increased transmission at 550 nm, indicating changes in the optical behavior of the films. 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. sheet resistance and transient terahertz photoconductivity measurements establish that the nanoskins electrically de-wire into separated particles. the plasmonic behavior of the nanoskins has implications for their use in a range of optical and electrochemical applications.
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کلیدواژه
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ruthenium dioxide ,transient absorption ,transparent conductor ,calcining ,plasmonics ,ultrafast dynamics
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آدرس
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naval research laboratory/national research council postdoctoral fellow, washington, usa, naval research laboratory/national research council postdoctoral fellow, washington, usa, chemistry division, u.s. naval research laboratory, usa, schafer corp., usa, naval research laboratory/national research council postdoctoral fellow, washington, usa, naval research laboratory/national research council postdoctoral fellow, washington, usa, chemistry division, u.s. naval research laboratory, usa, chemistry division, u.s. naval research laboratory, usa, materials science and technology division, u.s. naval research laboratory, usa, electronic science and technology division, u.s. naval research laboratory, usa, electronic science and technology division, u.s. naval research laboratory, usa, national institute of standards & technology/national research council postdoctoral associate, radiation physics division, physical measurement laboratory, usa, national institute of standards & technology, radiation physics division, physical measurement laboratory, usa, chemistry division, u.s. naval research laboratory, usa
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Authors
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