ACS Appl Mater Interfaces. 2018 May 2;10(17):14659-14664. doi: 10.1021/acsami.8b00686. Epub 2018 Apr 18.
Herein, we report an integrated photoelectrolysis of water employing organic metal halide (OMH) perovskite material. As generic OMH perovskite material and device architecture are highly susceptible to degradation by aqueous electrolytes, we have developed a versatile mold-cast and lift-off process to fabricate and assemble multipurpose metal encapsulation onto perovskite devices. With the metal encapsulation effectively protecting the perovskite cell and also functioning as electrocatalyst, the high-performance perovskite photoelectrodes exhibit high photovoltage and photocurrent that are effectively inherited from the original solid-state solar cell. More importantly, thus-fabricated perovskite photoelectrode demonstrates record-long unprecedented stability even at highly oxidizing potential in strong alkaline electrolyte. We expect that this versatile lift-off process can be adapted in a wide variety of photoelectrochemical devices to protect the material surfaces from corroding electrolyte and facilitate various electrochemical reactions.
本文报道了一种采用有机金属卤化物（OMH）钙钛矿材料的集成光电化学水分解系统。由于通用的 OMH 钙钛矿材料和器件结构极易受到水基电解质的降解，因此我们开发了一种通用的模压和剥离工艺，将多用途金属封装件制造并组装到钙钛矿器件上。通过金属封装有效地保护钙钛矿电池，并作为电催化剂，高性能的钙钛矿光电探测器表现出高的光电压和光电流，这些性能有效地继承自原始的固态太阳能电池。更重要的是，所制备的钙钛矿光电探测器在强碱性电解质中具有极高的氧化电势下，表现出前所未有的超长稳定性。我们期望这种通用的剥离工艺可以应用于各种光电化学器件中，以保护材料表面免受腐蚀性电解质的侵害，并促进各种电化学反应。
