https://scholars.lib.ntu.edu.tw/handle/123456789/631877
標題: | Applied IrO2 Buffer Layer as a Great Promoter on Ti-Doping V2O5 Electrode to Enhance Electrochromic Device Properties | 作者: | Ko, Tien Fu Chen, Po Wen KUAN-MING LI HONG-TSU YOUNG |
關鍵字: | buffer layer | cathodic arc plasma (CAP) | coloration efficiency (CE) | electrochromic device (ECD) | iridium oxide (IrO ) 2 | 公開日期: | 1-八月-2022 | 出版社: | MDPI | 卷: | 15 | 期: | 15 | 來源出版物: | Materials | 摘要: | Electrochromic devices (ECDs) are a promising material for smart windows that are capable of transmittance variation. However, ECDs are still too expensive to achieve a wide market reach. Reducing fabrication cost remains a challenge. In this study, we inserted an IrO2 buffer layer on Ti-doped V2O5 (Ti:V2O5) as a counter electrode using various Ar/O2 gas flow ratios (1/2, 1/2.5, 1/3 and 1/3.5) in the fabrication process. The buffered-ECD resulted in a larger cyclic voltammetry (CV) area and the best surface average roughness (Ra = 3.91 nm) to promote electrochromic performance. It was fabricated using the low-cost, fast deposition process of vacuum cathodic arc plasma (CAP). This study investigates the influence of the IrO2 buffer/Ti:V2O5 electrode on ECD electrochemical and optical properties, in terms of color efficiency (CE) and cycle durability. The buffered ECD (glass/ITO/WO3/liquid electrolyte/IrO2 buffer/Ti:V2O5/ITO/glass) demonstrated excellent optical transmittance modulation; ∆T = 57% (from Tbleaching (67%) to Tcoloring (10%)) at 633 nm, which was higher than without the buffer (ITO/WO3/liquid electrolyte/Ti:V2O5/ITO) (∆T = 36%). In addition, by means of an IrO2 buffer, the ECD exhibited high coloration efficiency of 96.1 cm2/mC and good durability, which decayed by only 2% after 1000 cycles. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631877 | ISSN: | 1996-1944 | DOI: | 10.3390/ma15155179 |
顯示於: | 機械工程學系 |
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