2015 CAP Congress / Congrès de l'ACP 2015

**WITHDRAWN** Electrical and optical properties of electrochromic Tungsten trioxide (WO3) thin films at temperature range 300 to 500K

16 Jun 2015, 08:45

15m

CCIS L2-190 (University of Alberta)

Oral (Non-Student) / orale (non-étudiant) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) T1-9 Nanostructured Surfaces and Thin Films (DSS-DCMMP) / Surfaces et couches minces nanostructurées (DSS-DPMCM)

Speaker

Bassel Abdel Samad (Moncton University)

Description

During the past decade a great interest has been shown in the study of transition tungsten trioxide (WO3) thin films. The reason is that this transition presents a number of interesting optical and electrical properties. While their optical properties are very well studied in view of their application in smart windows, not much study is focussed on their electrical properties as a function of temperature. In this work we will present a detailed study of the electrical properties of lithium intercalated as a function of the temperature coefficient of resistance (TCR) of WO3 thin films as well as the electrochromic properties of these films. Using the variable range hoping model we calculated the density of states at the Fermi level of a samples prepared by thermal evaporation and inserted with lithium by a dry process. The TCR measurements were performed in temperature range 300 to 500 K. The understanding of this temperature dependent electrical behavior is expected to enhance our understanding of the electrochromic process in these films.