PMID- 35706997 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2046-1402 (Electronic) IS - 2046-1402 (Linking) VI - 11 DP - 2022 TI - Realisation of Solid-State Electrochromic Devices Based on Gel Electrolyte. PG - 380 LID - 10.12688/f1000research.73661.2 [doi] AB - Background: In the last decade, there has been much interest in the area of solid polymer electrolyte (SPE) to address the issues of electrolyte leakage and evaporation in electrochromic devices (ECD). ECD is a state-of-the-art technology having the ability to change from transparent state to opaque state under the influence of a small applied voltage for energy saving applications. Methods: In this work, tungsten oxide (WO (3)) films were fabricated via the sol-gel spin-coating method. Subsequently, ECDs were assembled based on SPE and liquid polymer electrolyte (LPE), respectively using indium doped tin oxide (ITO) coated glass as conducting electrodes and WO (3) films as working electrode. Results: Cyclic voltammetry (CV) results revealed reduced ionic conductivity of conducting ions in SPE based ECD (SECD) owing to increased viscosity by addition of PMMA. However, lesser time was required for the colouration process. LPE based ECD (LECD) showed higher colouration efficiency (CE) compared to its SECD counterpart. This is attributed to its larger optical modulation. Conclusions: This work presents a comparison between the performance of LECD and SECD in terms of electrochromic (EC) and optical properties. They were analysed through CV, chronoamperometry (CA) and ultraviolet-visible (UV-Vis) spectrophotometer. Furthermore, this work provides an insight on the employment of solid-state electrolytes in ECDs in view of the persistent leakage and evaporation problems in ECD implementation. CI - Copyright: (c) 2022 Au BWC et al. FAU - Au, Benedict Wen-Cheun AU - Au BW AD - Faculty of Engineering, Multimedia University, Cyberjaya, Selangor, 63100, Malaysia. FAU - Chan, Kah-Yoong AU - Chan KY AUID- ORCID: 0000-0003-1076-5034 AD - Faculty of Engineering, Multimedia University, Cyberjaya, Selangor, 63100, Malaysia. FAU - Sahdan, Mohd Zainizan AU - Sahdan MZ AD - Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, Johor, 86400, Malaysia. FAU - Chong, Abraham Shiau-Iun AU - Chong AS AD - KESPRO Consultants Sdn Bhd, KESPRO Consultants Sdn Bhd, Bandar Sunway, Subang Jaya, Selangor, 47500, Malaysia. FAU - Knipp, Dietmar AU - Knipp D AD - School of Engineering and Science, Jacobs University Bremen, Bremen, Bremen, 28759, Germany. LA - eng SI - Dryad/10.5061/dryad.qfttdz0jx PT - Journal Article DEP - 20220331 PL - England TA - F1000Res JT - F1000Research JID - 101594320 SB - IM PMC - PMC9184923 OTO - NOTNLM OT - Electrochromic Device OT - Solid Polymer Electrolyte OT - Tungsten Oxide COIS- No competing interests were disclosed. EDAT- 2022/06/18 06:00 MHDA- 2022/06/18 06:01 CRDT- 2022/06/17 02:30 PHST- 2022/05/18 00:00 [accepted] PHST- 2022/06/17 02:30 [entrez] PHST- 2022/06/18 06:00 [pubmed] PHST- 2022/06/18 06:01 [medline] AID - 10.12688/f1000research.73661.2 [doi] PST - epublish SO - F1000Res. 2022 Mar 31;11:380. doi: 10.12688/f1000research.73661.2. eCollection 2022.