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Hybrid 2D [Pb(CH3NH2)I2]n Coordination Polymer Precursor for Scalable Perovskite Deposition
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-06-08 , DOI: 10.1021/acsenergylett.0c00781 Benny Febriansyah 1, 2, 3 , Teck Ming Koh 1 , Prem Jyoti Singh Rana 1 , Thomas J. N. Hooper 1 , Zhi Zhong Ang 3 , Yongxin Li 3 , Annalisa Bruno 1 , Michael Grätzel 4 , Jason England 3 , Subodh G. Mhaisalkar 1, 5 , Nripan Mathews 1, 5
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-06-08 , DOI: 10.1021/acsenergylett.0c00781 Benny Febriansyah 1, 2, 3 , Teck Ming Koh 1 , Prem Jyoti Singh Rana 1 , Thomas J. N. Hooper 1 , Zhi Zhong Ang 3 , Yongxin Li 3 , Annalisa Bruno 1 , Michael Grätzel 4 , Jason England 3 , Subodh G. Mhaisalkar 1, 5 , Nripan Mathews 1, 5
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A two-dimensional hybrid coordination polymer [Pb(CH3NH2)I2]n featuring a well-defined layered structure is reported for scalable perovskite ink and deposition. This coordination polymer exhibits structural, spectroscopic, and physicochemical properties distinct from common PbI2 perovskite precursors. Notably, it serves as a methylamine “gas carrier” capable of liberating methylamine (CH3NH2) into the precursor solution, thus improving the solubility of perovskite in unconventional, greener processing solvents, such as acetonitrile. The purity of [Pb(CH3NH2)I2]n single crystals and the ability of the precursor to reduce sources of defects such as polyiodide species in solution allow the formation of high-quality perovskite films. This eventually results in efficient and stable devices, fabricated via a single-step antisolvent-free deposition method, transferable to large-area slot die coating. Gram scale synthesis of this unique lead precursor is demonstrated, essential for the scale-up of perovskite photovoltaic technology.
中文翻译：
用于可扩展钙钛矿沉积的杂化2D [Pb（CH 3 NH 2）I 2 ] n配位聚合物前体
据报道，具有良好层状结构的二维杂化配位聚合物[Pb（CH 3 NH 2）I 2 ] n用于可伸缩的钙钛矿油墨和沉积。这种配位聚合物表现出不同于普通PbI 2钙钛矿前体的结构，光谱和物理化学性质。值得注意的是，它充当能够将甲胺（CH 3 NH 2）释放到前体溶液中的甲胺“气体载体” ，从而提高了钙钛矿在非常规，较绿色的加工溶剂（如乙腈）中的溶解度。[Pb（CH 3 NH 2）I 2 ] n的纯度单晶和前驱体减少溶液中诸如聚碘化物等缺陷来源的能力使得可以形成高质量的钙钛矿薄膜。这最终导致通过单步无溶剂沉积方法制造的高效，稳定的设备，可转移到大面积狭缝模具涂料中。演示了这种独特的铅前体的克级合成，这对于钙钛矿光伏技术的规模放大至关重要。
更新日期：2020-07-10
中文翻译：
用于可扩展钙钛矿沉积的杂化2D [Pb（CH 3 NH 2）I 2 ] n配位聚合物前体
据报道，具有良好层状结构的二维杂化配位聚合物[Pb（CH 3 NH 2）I 2 ] n用于可伸缩的钙钛矿油墨和沉积。这种配位聚合物表现出不同于普通PbI 2钙钛矿前体的结构，光谱和物理化学性质。值得注意的是，它充当能够将甲胺（CH 3 NH 2）释放到前体溶液中的甲胺“气体载体” ，从而提高了钙钛矿在非常规，较绿色的加工溶剂（如乙腈）中的溶解度。[Pb（CH 3 NH 2）I 2 ] n的纯度单晶和前驱体减少溶液中诸如聚碘化物等缺陷来源的能力使得可以形成高质量的钙钛矿薄膜。这最终导致通过单步无溶剂沉积方法制造的高效，稳定的设备，可转移到大面积狭缝模具涂料中。演示了这种独特的铅前体的克级合成，这对于钙钛矿光伏技术的规模放大至关重要。
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