材料科学
溶剂
钙钛矿(结构)
碘化物
剪切(物理)
化学工程
光致发光
钙钛矿太阳能电池
二甲基亚砜
薄膜
太阳能电池
纳米技术
有机化学
化学
光电子学
复合材料
工程类
作者
Benjamin T. Smith,Sean T. Thornton,Ghada Abdelmageed,Rashad F. Kahwagi,Rania Elsebai,Vlad Chiriac,Hyun-Tak Kim,Sean Hinds,Ghada I. Koleilat
标识
DOI:10.1002/adpr.202200088
摘要
Solvent mixtures for making uniform, crystalline methylammonium lead iodide (MAPbI 3 ) perovskite films are provided. The solvents dimethyl sulfoxide (DMSO), γ‐butyrolactone (GBL), and 1‐methyl‐2‐pyrrolidinone (NMP) are examined as well as their binary combinations to prepare solution‐sheared perovskite films at higher than 150 °C temperatures. Characterization methods such as imaging, X‐ray diffraction, grazing‐incidence wide‐angle X‐ray scattering, and photoluminescence (PL) to evaluate the crystal size, quality, and ordering that determine the viability of these films for device applications are explored and then a perovskite solar cell is made to test the stability of the most promising film. Excellent macroscopic crystals, over 1 mm in length, are achieved using a solvent mixture containing equal volumes of DMSO and NMP. These superior 3D MAPbI 3 films, which retain solvent–perovskite intermediate phases and exhibit high crystalline ordering, are essential for high‐performing and stable optoelectronic devices.
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