Fabrication of MoS2/WO3 nanocomposite films for enhanced electro-chromic performance. (20th November 2017)

• Record Type: Journal Article
• Authors: Rakibuddin, Md.; Kim, Haekyoung
• Is Part Of: New journal of chemistry. Volume 41:Number 24(2017)
• Page Start: 15327
• Page End: 15333
• Publication Date: 2017-11-20
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj03011h
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A novel MoS2 nanocomposite for electrochromic devices was synthesized, showing enhanced transmittance variation, colouration efficiency and switching times. Abstract : A novel MoS2 /WO3 nanocomposite (MSW) based electrochromic device (ECD) has been fabricated by a facile cost effective sol–gel spin-coating approach. MoS2 is hybridized with WO3 nanoparticles via an in situ hydrothermal method. The fabrication of the ECD film using a low temperature solution-process is in high demand for flexible applications. The fabricated MSW films exhibited enhanced transmittance variation (Δ T ∼ 75–60%), good colouration efficiency (51.2–39.4 cm 2 C −1 ) and fast switching times compared to pure WO3 films at 700 nm with an applied potential of 0 V to −1.5 V. It is expected that the good electrical conductivity, high specific surface area and unique graphene-like sheet structure of the MoS2 layer will allow facile and effective insertion of Li + ions at the interface between the film and the electrolyte, hence promoting a higher electron transfer rate, which is crucial for increasing the electrochromic properties of WO3 films. It is expected that the MSW composite film could be a promising material for practical EC applications. In addition, the application of MoS2 may create a new pathway for inorganic hybrid materials as possibly suitable graphene alternatives in EC devices and potential candidates for a flexible transparent conductive electrode (TCE) as well.