Solar Energy Materials and Solar Cells, Vol.90, No.4, 414-421, 2006
Electrochemical and optical properties of sputter deposited Ir-Ta and Ir oxide thin films
Addition of tantalum oxide has been investigated in order to improve the electrochromic properties of iridium oxide. Films of iridium-tantalum oxide and iridium oxide have been prepared and studied with regard to their optical and electrochemical properties. It can be seen that the addition of tantalum decreases the optical absorption coefficient and increases the ion diffusion coefficient. The change of properties is thought to be a result of the dilution of colouring iridium oxide with the better ion conducting tantalum oxide. (c) 2005 Elsevier B.V. All rights reserved.