Electrochromic windows dynamically control solar irradiation to buildings by using transition-metal oxide films that change color in response to an electrical current. Electrochromic glass companies currently manufacture these films by physical deposition methods. We report here a solution-based “photodeposition” protocol that forms layers of electrochromically active metal oxides (e.g., WO₃, Nb₂O₅, MoO₃, and V₂O₅) on a timescale that rivals current industry practice. Indeed, the high-porosity WO₃ thin films prepared in this study displayed electrochromic performance parameters—including an optical modulation of 70% at 700 nm, colored and bleached interchange times on the order of seconds, and a coloration efficiency > 130 cm²/C—that are commensurate with the state of the art. This photodeposition method is scalable and therefore offers a potentially significant advancement for the large-scale deployment of electrochromic windows.

电致变色窗户通过使用过渡金属氧化物膜动态地控制对建筑物的太阳辐射，该过渡金属氧化物膜会响应于电流而改变颜色。电致变色玻璃公司目前通过物理沉积方法制造这些膜。我们在这里报告了一种基于解决方案的“光沉积”协议，该协议在与当前行业惯例相当的时间范围内形成了电致变色活性金属氧化物（例如，WO ₃，Nb ₂ O ₅，MoO ₃和V ₂ O ₅）层。确实，高孔隙度的WO ₃在这项研究中制备的薄膜显示出电致变色性能参数-包括与状态相对应的电致变色性能参数-在700 nm处的光学调制为70％，有色和漂白的交换时间为数秒，着色效率> 130 cm ² / C。的艺术。这种光沉积方法是可扩展的，因此为电致变色窗的大规模部署提供了潜在的重大进步。