Sidhik Siraj, Metcalf Isaac, Li Wenbin, Kodalle Tim, Dolan Connor J, Khalili Mohammad, Hou Jin, Mandani Faiz, Torma Andrew, Zhang Hao, Garai Rabindranath, Persaud Jessica, Marciel Amanda, Muro Puente Itzel Alejandra, Reddy G N Manjunatha, Balvanz Adam, Alam Muhammad A, Katan Claudine, Tsai Esther, Ginger David, Fenning David P, Kanatzidis Mercouri G, Sutter-Fella Carolin M, Even Jacky, Mohite Aditya D
Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005, USA.
Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA.
Science. 2024 Jun 14;384(6701):1227-1235. doi: 10.1126/science.abq6993. Epub 2024 Jun 13.
We present a design strategy for fabricating ultrastable phase-pure films of formamidinium lead iodide (FAPbI) by lattice templating using specific two-dimensional (2D) perovskites with FA as the cage cation. When a pure FAPbI precursor solution is brought in contact with the 2D perovskite, the black phase forms preferentially at 100°C, much lower than the standard FAPbI annealing temperature of 150°C. X-ray diffraction and optical spectroscopy suggest that the resulting FAPbI film compresses slightly to acquire the (011) interplanar distances of the 2D perovskite seed. The 2D-templated bulk FAPbI films exhibited an efficiency of 24.1% in a p-i-n architecture with 0.5-square centimeter active area and an exceptional durability, retaining 97% of their initial efficiency after 1000 hours under 85°C and maximum power point tracking.
我们提出了一种通过晶格模板法制备超稳定纯相甲脒碘化铅（FAPbI）薄膜的设计策略，该方法使用特定的以FA为笼形阳离子的二维（2D）钙钛矿。当纯FAPbI前驱体溶液与二维钙钛矿接触时，黑色相在100°C时优先形成，远低于标准的150°C的FAPbI退火温度。X射线衍射和光谱表明，所得的FAPbI薄膜会略微压缩以获得二维钙钛矿晶种的（011）面间距。在具有0.5平方厘米有源区的p-i-n结构中，二维模板化的块状FAPbI薄膜表现出24.1%的效率以及出色的耐久性，在85°C和最大功率点跟踪条件下1000小时后仍保留其初始效率的97%。
