Optical Charge Transfer Absorption in Lithium-intercalated Tungsten Oxide Thin Films
2006 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, no 88, 081906- p.Article in journal (Refereed) Published
Amorphous tungsten oxide exhibits electrochromism when intercalated with protons or lithium ions.Thin films of the material were prepared by dc magnetron sputtering and subsequentlyelectrochemically intercalated with lithium. The optical absorption in the wavelength range300 to 2500 nm was measured for a number of lithium concentrations. All the spectra can be fittedby a superposition of three Gaussian peaks, representing the three possible electronic transitionsbetween W6+, W5+, and W4+ sites. The variation of the peak strength with lithium concentration isconsistent with the predictions of a statistical theory.
Place, publisher, year, edition, pages
2006. no 88, 081906- p.
Condensed Matter Physics Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-26086DOI: 10.1063/1.2177548ISI: 000235553300025OAI: oai:DiVA.org:uu-26086DiVA: diva2:53860