针对光伏驱动电解水的整体式PEC在产业化过程中所面临的效率、稳定性以及成本等关键问题，本项目拟构筑一类全新的整体式PEC，其中电解水的分解电压由全太阳光驱动的PSC组件提供，电解水的电极材料采用催化活性高的过渡金属硫族化合物，光伏组件和电解池之间采用一体式的无线模式。实验采用溶液法构建PSC，通过实施和优化界面工程，在钙钛矿层间引入稳定、高导电、能带可控的无机界面材料，使其在电极附近分别抽取电子和空穴，促进载流子的有效分离，获得高效、有稳定输出电压的PSC器件。基此，构建PSC串联组件，并使之应用于硫族电极构成的电解池。检测整体式PEC在光电产氢过程中的水还原动力学特征、STH效率和产氢稳定性等性能评价参量，并从机理上探究PSC结构、电极材料对PEC的STH效率、产氢稳定性的影响规律，揭示PSC与电解池偶联产氢的协同反应机制，为发展高效低成本的氢燃料装置提供新的材料体系和技术路线。

In the process of industrialization, integrated PECs for water splitting driven by PSCs are currently facing with several key issues i.e. efficiency, stability and cost. To this end, this project will construct a novel integrated PEC, in which decomposition voltage for electrolysis of water is offered by solar-driven PSC module, electrode material used is highly active transition metal chalcogenides, and wireless PEC is explored. Specifically, PSCs will be prepared via solution-processed method, and consequently high-performance PSCs with stable output voltage will be further achieved by means of implementing and optimizing interface engineering, with emphasis on introducing inorganic interface materials with stable, highly conductive and energy bandgap-controlled characteristics into the photoactive perovskite layers. These interface layers can extract electrons and holes at the nearby electrodes, leading to the effective separation of photogenerated carriers. Based on this, tandem PSC module will be fabricated, and then applied to electrolytic tank containing chalcogenide-based electrodes. During the photoelectrocatalytic hydrogen production, water reduction dynamics, STH efficiency, and stability of integrated PECs will be examined step-by-step. Also, effect of PSC structure and electrode materials on STH efficiency and stable hydrogen production will be studied on mechanism. Synergic reaction mechanism coupling PSC and electrolytic tank for hydrogen evolution will be verified. This study will provide new materials and technical routes for the development of high-efficiency and low-cost hydrogen fuel devices.