The self-powered smart window is a promising wire-free system to integrate on the energy-saving building due to its independent and sustainable operations without an external power source. Solar-driven photoelectrochromic devices (PECDs), which derived from the hybridization of dye-sensitized solar cells (DSSCs) and electrochromic devices (ECDs), are potential systems to realize the convenient self-powered smart window. To further boosting up the optical contrast and minimizing the response time, in this study, a brand new hybrid type photoelectrochromic device (H-PECD) composed with a new architecture of independently covered photoelectrode with electrochromic conducting polymeric layer and a novel counter electrode (CE) with bifunctional electrochemical layer is proposed in the first time. Compared to traditional combined-type PECDs (C-PECD), the electrochromic and the photoactive layers are independently integrated on the photoelectrode to overcome the limitation of electrochromic material selection. By taking this advantage, a conducting polymer of PEDOT-MeOH with high coloration efficiency can be introduced to serve as the electrochromic layer for further enhancing the optical performance of H-PECD. Furthermore, a highly transparent electrochemical layer serves as bifunctional CE for not only facilitating the I₃^- reduction reaction for accelerating the bleaching rate, but also contributes additional optical contrast of 3% under coloring process. By comparing with another classic configuration of separated type PECD (S-PECD), the coloring and bleaching time of H-PECD can be shortened within 5 s under maximum transmittance change at 600 nm for 31.7% since the photovoltaic performance and photo-coloration efficiency (PhCE) is improved by integrating with bifunctional CE. By taking advantage of H-PECD, duel-coloring modes of high optical contrast and ultrafast response can be achieved by controlling the operating processes. This research is a substantial advancement toward the practical application of PECDs and self-powered smart windows.

自供电智能窗因其独立和可持续运行而无需外部电源，是一种很有前途的无线系统，可以集成到节能建筑中。源自染料敏化太阳能电池（DSSC）和电致变色器件（ECD）杂交的太阳能驱动光电致变色器件（PECD）是实现方便的自供电智能窗的潜在系统。为了进一步提高光学对比度和最小化响应时间，在本研究中，一种全新的混合型光电致变色器件 (H-PECD) 由具有电致变色导电聚合物层的独立覆盖光电极和新型对电极 (CE) 的新结构组成。 ) 首次提出具有双功能电化学层。与传统的组合型 PECD (C-PECD) 相比，电致变色层和光敏层独立集成在光电极上，克服了电致变色材料选择的局限性。利用这一优势，可以引入具有高着色效率的PEDOT-MeOH导电聚合物作为电致变色层，进一步提高H-PECD的光学性能。此外，高度透明的电化学层用作双功能 CE，不仅有助于 I₃ ^-用于加速漂白速度的还原反应，而且在着色过程中也有助于增加 3% 的光学对比度。与另一种经典的分离型PECD（S-PECD）配置相比，在600 nm最大透射率变化31.7%的情况下，H-PECD的着色和漂白时间可缩短5 s以内，因为其光伏性能和光着色效率(PhCE) 通过与双功能 CE 集成得到改进。利用H-PECD，可以通过控制操作过程来实现高光学对比度和超快响应的双色模式。这项研究是对 PECD 和自供电智能窗户的实际应用的重大进步。