Electrochromic performance and potential stability of sputtered V2O5 film for a complementary inorganic all-solid-state electrochromic device

IF 4.5 3区化学 Q1 Chemical Engineering Journal of Electroanalytical Chemistry Pub Date : 2023-09-01 DOI:10.1016/j.jelechem.2023.117628

Hsi-Chao Chen , Yu-Hung Yen , Yu-Xuan Zhuang , Tan-Fu Liu

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Abstract

Vanadium Pentoxide (V₂O₅) has good ion storage capacity and weak anodic electrochromism. Since the V₂O₅ and Tungsten Trioxide (WO₃) films were used as the auxiliary and major color-changing layers, respectively, then they were combined with heat-cured gel (LiClO₄ + PC) + PMMA electrolyte as an complementary all-solid-state electrochromic device (ECD). Also, the V₂O₅ films were prepared at different oxygen flows and annealing temperatures. These results exhibited that oxygen flow of 4 sccm and annealing temperature of 400 °C can enable the optimal optical contrast (ΔT) to reach 38.7%@550 nm. The response time of the coloring(tc) and the bleaching(tb) were 5 and 4 s, respectively. Raman spectrum showed the stable phase of V⁵⁺ and specific element ratio of 2.52 and X-ray photoelectron spectroscopy (XPS) had the red shift phenomenon. However, the performance of ITO/V₂O₅/gel-electrolyte/WO₃/ITO device, the best working voltage was measured as ±2.5 V, the optical contrast was ΔT = 42% and the response time of tc and tb were 6.5 and 5.5 s, respectively. These results demonstrate that ECD has the advantages of fast response time and low voltage stable startup.

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互补无机全固态电致变色器件用溅射V2O5薄膜的电致变色性能和电位稳定性

五氧化二钒(V2O5)具有良好的离子储存能力和较弱的阳极电致变色性。由于V2O5和WO3薄膜分别作为辅助变色层和主要变色层，因此将它们与热固化凝胶(LiClO4 + PC) + PMMA电解质结合，作为互补的全固态电致变色器件(ECD)。在不同的氧流量和退火温度下制备了V2O5薄膜。结果表明，当氧流量为4 sccm，退火温度为400℃时，最佳光学对比度(ΔT)达到38.7%@550 nm。染色反应时间(tc)为5 s，漂白反应时间(tb)为4 s。拉曼光谱显示稳定相为V5+，比元素比为2.52,x射线光电子能谱(XPS)出现红移现象。而ITO/V2O5/凝胶-电解质/WO3/ITO器件的最佳工作电压为±2.5 V，光学对比度为ΔT = 42%， tc和tb的响应时间分别为6.5和5.5 s。结果表明，ECD具有响应时间快、启动电压低等优点。

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来源期刊

Journal of Electroanalytical Chemistry Chemical Engineering-General Chemical Engineering

CiteScore

7.50

自引率

6.70%

发文量

912

审稿时长

>12 weeks

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.