基于WO3-MoO3和TiO2/CdS复合电极的光电致变色器件

PhotoelectrochromicDevices Based on WO3-MoO3 and TiO2/CdS Composite Electrodes

摘要:

电致变色广泛应用于智能窗领域,但电致变色材料仍需外部电源驱动,将太阳能电池与电致变色材料结合起来的光电致变色器件可实现无需外部供电的智能变色调控。性能优异的变色阴极和光阳极是当下光电致变色器件的研究热点。通过水热法制备WO₃-MoO₃薄膜,研究其电致变色性能；通过水热法结合连续离子层沉积法制备TiO₂/CdS复合薄膜,研究其光电转换性能。最后将WO₃-MoO₃薄膜和TiO₂/CdS复合薄膜分别作为光电致变色器件的变色阴极、光阳极构建WO₃/MoO₃-TiO₂/CdS光电致变色器件。WO₃/MoO₃-TiO₂/CdS光电致变色器件具有较大的光学调制范围(630nm处为41.99%)、更高的着色效率(35.787%),将其作为智能窗应用在现代建筑、通行工具等领域具有重要应用价值。

Abstract:

Electrochromism is widely used in the field of smart windows, but electrochromic materials still require external power to support them. The combination of solar cells and electrochromic materials can achieve intelligent color control without external power supply. The excellent performance of color changing cathodes and photoanodes are currently a research hot topic in photoelectrochromic devices.WO₃-MoO₃ thin films were prepared by hydrothermal method and their electrochromic performances were studied; TiO₂/CdS composite thin films were prepared by hydrothermal method combined with continuous ion layer deposition method, and their photoelectric conversion performances were studied. Finally, WO₃-MoO₃ thin film and TiO₂/CdS composite thin film were used as the color changing cathodes and photoanodes of the photoelectrochromic devices, respectively. WO₃/MoO₃-TiO₂/CdS photoelectrochromic devices. WO₃/MoO₃-TiO₂/CdS photoelectrochromic devices have a large optical modulation range (41.99% at 630nm) and higher coloration efficiency (35.787%), making them of great application value as smart windows in modern buildings, transportation tools, and other fields.