Electrochromic Properties of Graphene Doped Nb2O5Thin Film
ECS Journal of Solid State Science and Technology, vol.9, no.12, 2020 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 9 Issue: 12
- Publication Date: 2020
- Doi Number: 10.1149/2162-8777/abd079
- Journal Name: ECS Journal of Solid State Science and Technology
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC
- Keywords: Nb2O5 thin film, Graphene, Electrochromic device, Coloration efficiency, NIOBIUM PENTOXIDE, SOL-GEL, ENHANCED COLORATION, SUPERCAPACITORS, COATINGS
- Eskisehir Osmangazi University Affiliated: Yes
Abstract
© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.Electrochromic device plays a key role in energy efficiency management and modern display technology. As a cathodic coloration material, Nb2O5 is one of the important material used in the electrochromic device. The capacity of a layer is related with the intercalation and deintercalation behavior. Graphene Doping is a promising process for the high-capacity ion storage application. Graphene is a two-dimensional material and it possesses excellent mechanical and electrical properties. In this paper, graphene doped Nb2O5 thin films have been deposited onto ITO coated glass substrate by a thermionic vacuum arc (TVA) technique. The coloring efficiency has been calculated as 91 and 56 cm2 C-1 at 414 and 550 nm, respectively. The transmittance variation of graphene doped Nb2O5 layer have determined as 42%. According to the Raman spectroscopy, the peaks for orthorhombic phase of Nb2O5 and graphene bands have been observed. According to obtained results, graphene is a promising dopant material for the high performance electrochromic device with Nb2O5 active layer.