A Universal Cosolvent Evaporation Strategy Enables Direct Printing of Perovskite Single Crystals for Optoelectronic Device Applications
A Universal Cosolvent Evaporation Strategy Enables Direct Printing of Perovskite Single Crystals for Optoelectronic Device Applications
复制标题
通用共溶剂蒸发策略可直接打印用于光电器件应用的钙钛矿单晶
DOI：
10.1002/adma.202109862
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发表时间：
2022
影响因子：
29.4
通讯作者：
Baran, Derya
中科院分区：
文献类型：
--
作者：
Corzo, Daniel;Wang, Tonghui;Gedda, Murali;Yengel, Emre;Khan, Jafar I.;Li, Ruipeng;Niazi, Muhammad Rizwan;Huang, Zhengjie;Kim, Taesoo;Baran, Derya
溶液处理的金属卤化物钙钛矿（MHP）单晶（SC）由于其与多晶薄膜相比具有上级光电性能，因此越来越多的印刷电子应用对它们有很高的需求。迫切需要使SC制造容易、可扩展并且与印刷电子制造基础设施兼容。在这里，提出了一种通用的共溶剂蒸发（CSE）策略，通过该策略，钙钛矿SC和阵列通过印刷和涂覆方法在室温下从干燥液滴在几分钟内直接在基底上产生。CSE策略成功地通过液滴的受控干燥来引导过饱和，以抑制除一个之外的所有结晶途径，并且显示出产生具有一致性的各种各样的3D、2D和混合阳离子/卤化物钙钛矿的SC。这种方法适用于常用的前体和溶剂，使其具有通用性。重要的是，SC消耗液滴中的前体，这使得能够以最少的残留物大规模制造SC阵列。展示了具有出色性能的3D和2D钙钛矿光电探测器器件的直接片上制造。该方法表明，现在可以使用精密印刷和可扩展的高通量涂覆方法在基底上制造任何MHP SC。
Solution‐processed metal halide perovskite (MHP) single crystals (SCs) are in high demand for a growing number of printed electronic applications due to their superior optoelectronic properties compared to polycrystalline thin films. There is an urgent need to make SC fabrication facile, scalable, and compatible with the printed electronic manufacturing infrastructure. Here, a universal cosolvent evaporation (CSE) strategy is presented by which perovskite SCs and arrays are produced directly on substrates via printing and coating methods within minutes at room temperature from drying droplets. The CSE strategy successfully guides the supersaturation via controlled drying of droplets to suppress all crystallization pathways but one, and is shown to produce SCs of a wide variety of 3D, 2D, and mixed‐cation/halide perovskites with consistency. This approach works with commonly used precursors and solvents, making it universal. Importantly, the SC consumes the precursor in the droplet, which enables the large‐scale fabrication of SC arrays with minimal residue. Direct on‐chip fabrication of 3D and 2D perovskite photodetector devices with outstanding performance is demonstrated. The approach shows that any MHP SC can now be manufactured on substrates using precision printing and scalable, high‐throughput coating methods.