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Melt-Processed Halide Perovskite Thin Films from a Two-Dimensional Ruddlesden–Popper Phase Precursor
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2023-05-31 , DOI: 10.1021/acs.jpclett.2c03916 Atefe Hadi 1 , Rainie L Schlichtmann 1 , Matthew I Milot 1 , Jonathan Slobidsky 1 , Madeleine Wilsey 2 , Alex Verburg 1 , Yunhua Chen 3 , Umar H Hamdeh 1 , Bradley J Ryan 1 , Brett Boote 4 , Javier Vela 2, 3 , Matthew G Panthani 1
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2023-05-31 , DOI: 10.1021/acs.jpclett.2c03916 Atefe Hadi 1 , Rainie L Schlichtmann 1 , Matthew I Milot 1 , Jonathan Slobidsky 1 , Madeleine Wilsey 2 , Alex Verburg 1 , Yunhua Chen 3 , Umar H Hamdeh 1 , Bradley J Ryan 1 , Brett Boote 4 , Javier Vela 2, 3 , Matthew G Panthani 1
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While halide perovskite thin films have enormous potential for photovoltaics and other optoelectronics, the use of environmentally hazardous solvents during their deposition and processing poses a barrier to their commercialization. In this work, we demonstrated the deposition of melt-processable precursors and subsequent transformation into halide perovskite thin films without using environmentally hazardous solvents. We melted the wide-bandgap layered perovskites [(C6H5CH(CH3)CH2NH3)2PbI4:β-Me-PEA2PbI4] at ∼210 °C and blade coated them into films. The β-Me-PEA2PbI4 films were subsequently transformed to perovskite-phase methylammonium or formamidinium lead iodide films using a cation-exchange process in an alcohol-based solvent. Lastly, we demonstrate the potential and limitations of a completely solvent-free approach that uses solid-state transformation of a β-Me-PEA2PbI4 film. This work represents a substantial step toward eliminating environmentally hazardous solvents and enables inexpensive industrial-scale liquid-phase deposition processes that do not require expensive systems for handling and disposing of environmentally hazardous solvents.
中文翻译：
来自二维 Ruddlesden-Popper 相前体的熔融加工卤化物钙钛矿薄膜
虽然卤化物钙钛矿薄膜在光伏和其他光电子领域具有巨大潜力，但在其沉积和加工过程中使用对环境有害的溶剂对其商业化构成了障碍。在这项工作中，我们展示了可熔融加工前体的沉积以及随后在不使用对环境有害的溶剂的情况下转化为卤化物钙钛矿薄膜。我们将宽带隙层状钙钛矿 [(C 6 H 5 CH(CH 3 )CH 2 NH 3 ) 2 PbI 4 :β-Me-PEA 2 PbI 4 ] 在～210 °C 下熔化，然后用刀片将它们涂布成薄膜。β-Me-PEA 2 PbI 4随后在醇基溶剂中使用阳离子交换过程将薄膜转化为钙钛矿相甲基铵或甲脒碘化铅薄膜。最后，我们展示了使用 β-Me-PEA 2 PbI 4薄膜固态转化的完全无溶剂方法的潜力和局限性。这项工作代表了朝着消除对环境有害的溶剂迈出的实质性一步，并使廉价的工业规模液相沉积过程成为可能，而这些过程不需要昂贵的系统来处理和处置对环境有害的溶剂。
更新日期：2023-05-31
中文翻译：
来自二维 Ruddlesden-Popper 相前体的熔融加工卤化物钙钛矿薄膜
虽然卤化物钙钛矿薄膜在光伏和其他光电子领域具有巨大潜力，但在其沉积和加工过程中使用对环境有害的溶剂对其商业化构成了障碍。在这项工作中，我们展示了可熔融加工前体的沉积以及随后在不使用对环境有害的溶剂的情况下转化为卤化物钙钛矿薄膜。我们将宽带隙层状钙钛矿 [(C 6 H 5 CH(CH 3 )CH 2 NH 3 ) 2 PbI 4 :β-Me-PEA 2 PbI 4 ] 在～210 °C 下熔化，然后用刀片将它们涂布成薄膜。β-Me-PEA 2 PbI 4随后在醇基溶剂中使用阳离子交换过程将薄膜转化为钙钛矿相甲基铵或甲脒碘化铅薄膜。最后，我们展示了使用 β-Me-PEA 2 PbI 4薄膜固态转化的完全无溶剂方法的潜力和局限性。这项工作代表了朝着消除对环境有害的溶剂迈出的实质性一步，并使廉价的工业规模液相沉积过程成为可能，而这些过程不需要昂贵的系统来处理和处置对环境有害的溶剂。
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