Abstract In this study, an all-thin-film inorganic complementary electrochromic device (ECD) with the lithium doping zirconium dioxide (ZrO2:Li) ion conductor layer has demonstrated for the lower cost ECD applications. Even though the ZrO2:Li has demonstrated a lower lithium (Li) ion conductivity of 1.62 × 10−8 S/cm and ion mobility of 8.67 × 10−12 cm2/Vs, the switching characteristic of the ECDs has been improved. According to the refractive index measurement, the ion conductor ZrO2:Li with the higher refractive index value is also indicated a higher energy bandgap material. As a result, the possible mechanism is due to the electron energy barrier height 1.2 eV between the interface of electrochromic layer tungsten oxide (WO3) and ion conductor layer ZrO2:Li. Besides, the induction of an electric field between the WO3 and high bandgap ZrO2:Li material interface also accelerates the Li ion transported through the interface. Furthermore, the ZrO2:Li with the lower ion conductivity and mobility is due to the dense material structure, which is verified by the cross-sectional field emission scanning electron micrograph profile. Additionally, the dense material structure has also provided better surface morphology for thin-film device structures with the layer-by-layer deposition process.

中文翻译：

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用于改善全薄膜无机互补电致变色器件开关时间的离子导体势垒高度

摘要 在这项研究中，具有锂掺杂二氧化锆 (ZrO2:Li) 离子导体层的全薄膜无机互补电致变色器件 (ECD) 已证明可用于低成本 ECD 应用。尽管 ZrO2:Li 的锂 (Li) 离子电导率为 1.62 × 10-8 S/cm，离子迁移率为 8.67 × 10-12 cm2/Vs，但 ECD 的开关特性得到了改善。根据折射率测量，具有较高折射率值的离子导体 ZrO2:Li 也表明是较高能带隙材料。因此，可能的机制是由于电致变色层氧化钨 (WO3) 和离子导体层 ZrO2:Li 界面之间的电子能垒高度为 1.2 eV。此外，WO3 和高带隙 ZrO2 之间的电场感应：Li 材料界面还加速了通过该界面传输的 Li 离子。此外，具有较低离子电导率和迁移率的 ZrO2:Li 是由于致密的材料结构，横截面场发射扫描电子显微照片证实了这一点。此外，致密的材料结构还为采用逐层沉积工艺的薄膜器件结构提供了更好的表面形貌。