Journal article

Electrically Activated UV-A Filters Based on Electrochromic MoO3-x

Aram Arash, Sherif Abdulkader Tawfik, Michelle JS Spencer, Shubhendra Kumar Jain, Saba Arash, Aishani Mazumder, Edwin Mayes, Fahmida Rahman, Mandeep Singh, Vipul Bansal, Sharath Sriram, Sumeet Walia, Madhu Bhaskaran, Sivacarendran Balendhran



Chromism-based optical filters is a niche field of research, due to there being only a handful of electrochromic materials. Typically, electrochromic transition metal oxides such as MoO3 and WO3 are utilized in applications such as smart windows and electrochromic devices (ECD). Herein, we report MoO3-x-based electrically activated ultraviolet (UV) filters. The MoO3-x grown on indium tin oxide (ITO) substrate is mechanically assembled onto an electrically activated proton exchange membrane. Reversible H+ injection/extraction in MoO3-x is employed to switch the optical transmittance, enabling an electrically activated optical filter. The devices exhibit broadband transmission modulation (325-..

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University of Melbourne Researchers


Awarded by Australian Research Council (ARC)

Funding Acknowledgements

The authors acknowledge support from the Australian Research Council (ARC), with project and personnel support through DE150100909 (S.B.), DE160100023 (M.B.), DD170103477 (V.B.), and FT140101285 (V.B.) and equipment funding through LE110100223 and LE150100001. The authors also acknowledge the facilities and technical assistance of the Micro Nano Research Facility and RMIT Microscopy and Microanalysis Facility. DFT calculations were supported by the Multimodal Australian ScienceS Imaging and Visualisation Environment (MASSIVE) ( and were undertaken with the assistance of resources and services from the National Computational Infrastructure (NCI), which is supported by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.