title: Fast Electrochromic Device Based on Single-Walled Carbon Nanotube Thin Films.
abstract: Optical properties of electrochromic materials can be controlled by the application of an electric field allowing recent development of new applications such as smart windows technology for indoor climate control and energy conservation. We report the fabrication of a single-walled nanotube (SWNT) thin film based electro-optical modulator controlled by ionic liquid polarization in which the active electrochromic layer is made of a film of semiconducting (SC-) SWNTs and the counter-electrode is composed of a film of metallic (MT-) SWNTs. Optimization of this electro-optical cell allows the operations with an optical modulation depth of 3.7 dB and a response time in the millisecond range, which is thousands of times faster than typical electrolyte-controlled devices. In addition, a dual electro-optical device was built utilizing electro-optically active SC-SWNT films for each electrode that allowed increasing modulation depth of 6.7 dB while preserving the speed of the response.
authors.affiliation: Department of Chemistry, University of California , Riverside, California 92521, United States.|Center for Nanoscale Science and Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Matthew L
authors.initials: ML
authors.lastname: Moser
authors.affiliation: Department of Chemical and Environmental Engineering, University of California , Riverside, California 92521, United States.|Center for Nanoscale Science and Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Guanghui
authors.initials: G
authors.lastname: Li
authors.affiliation: Department of Chemical and Environmental Engineering, University of California , Riverside, California 92521, United States.|Center for Nanoscale Science and Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Mingguang
authors.initials: M
authors.lastname: Chen
authors.affiliation: Department of Chemistry, University of California , Riverside, California 92521, United States.|Center for Nanoscale Science and Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Elena
authors.initials: E
authors.lastname: Bekyarova
authors.affiliation: Department of Chemistry, University of California , Riverside, California 92521, United States.|Department of Chemical and Environmental Engineering, University of California , Riverside, California 92521, United States.|Center for Nanoscale Science and Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Mikhail E
authors.initials: ME
authors.lastname: Itkis
authors.affiliation: Department of Chemistry, University of California , Riverside, California 92521, United States.|Department of Chemical and Environmental Engineering, University of California , Riverside, California 92521, United States.|Center for Nanoscale Science and Engineering, University of California , Riverside, California 92521, United States.
authors.forename: Robert C
authors.initials: RC
authors.lastname: Haddon
keywords: Electro-optical; carbon nanotubes; electrochromic; graphene; ionic liquid