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Microwave-Assisted Preparation of Organo-Lead Halide Perovskite Single Crystals

机译：微波辅助制备有机铅卤化物钙钛矿单晶

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摘要

The efficiency of organo-lead halide perovskite-based optoelectronic devices is dramatically lower for amorphous materials compared to highly crystalline ones. Therefore, it is challenging to optimize and scale up the production of large-sized single crystals of perovskite materials. Here, we describe a novel and original approach to preparing lead halide perovskite single crystals by applying microwave radiation during the crystallization. The microwave radiation primarily causes precise heating control in the whole volume and avoids temperature fluctuations. Moreover, this facile microwave-assisted method of preparation is highly reproducible and fully automated, it and can be applied for various different perovskite structures. In addition, this cost-effective method is expected to be easily scalable because of its versatility and low energy consumption. The crystallization process has low heat losses; therefore, only a low microwave reactor power of 8-15 W during the temperature changes and of less than 1 W during the temperature holding is needed.
机译：与高度结晶的相比，有机铅卤化物钙钛矿的光电器件的效率显着降低了非晶材料。因此，优化和扩大钙钛矿材料的大尺寸单晶的生产是挑战性的。在这里，我们描述了一种通过在结晶过程中施加微波辐射来制备卤化铅钙钛矿单晶的新颖和原始方法。微波辐射主要导致整个体积中的精确加热控制，避免温度波动。此外，这种容易的微波辅助制备方法是高度可重复的并且可以完全自动化，并且可以应用于各种不同的钙钛矿结构。此外，由于其多功能性和低能耗，这种成本效益的方法预计将很容易地扩张。结晶过程具有低热损失;因此，需要在温度变化和温度保持过程中的温度变化和小于1W的低微波反应器功率。

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