Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6534133 | Solar Energy Materials and Solar Cells | 2018 | 8 Pages |
Abstract
Inorganic solid-state electrochromic devices (ECDs) based on tantalum oxide (Ta2O5) as ion conductor layer were fabricated by vacuum cathodic arc plasma (CAP) deposition. This work focuses on key factor of fabricating Ta2O5 film deposited by CAP through four different ratios of oxygen and argon. Our results show that refractive index mostly decreased with increasing oxygen flow rate. Refractive index of 1.9 was achieved for Ta 2O5 film with O2/Arâ¯=â¯2.4 which provided high ion conduction pathways through a highly porous structure. We also observed higher ionic conductivity Ïi=3.5Ã10â6Scmâ1 for Ta2O5 film at O2/Arâ¯=â¯2.4 which enhanced ion's mobility for ECDs causing rapid coloring/bleaching phenomenon. As a result, excellent optical density and rapid response times were observed in fabricated device with an area of 20â¯cm2, exhibiting optical density of 0.63 (@550â¯nm) and transmittance variation Tâ¯=â¯50% (@550â¯nm) with the bleaching time=â¯5 s and transmittance variation Tâ¯=â¯50% (@550â¯nm) with the coloring timeâ¯=â¯13â¯s.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Po-Wen Chen, Chen-Te Chang, Md. Manirul Ali, Jin-Yu Wu, Yu-Chen Li, Meng-Hsin Chen, Der-Jun Jan, Chi-Tsu Yuan,