Ahmadian-Yazdi Mohammad-Reza, Eslamian Morteza
University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai, 200240, China.
Nanoscale Res Lett. 2018 Jan 10;13(1):6. doi: 10.1186/s11671-017-2430-0.
In this "nano idea" paper, three concepts for the preparation of methylammonium lead halide perovskite particles are proposed, discussed, and tested. The first idea is based on the wet chemistry preparation of the perovskite particles, through the addition of the perovskite precursor solution to an anti-solvent to facilitate the precipitation of the perovskite particles in the solution. The second idea is based on the milling of a blend of the perovskite precursors in the dry form, in order to allow for the conversion of the precursors to the perovskite particles. The third idea is based on the atomization of the perovskite solution by a spray nozzle, introducing the spray droplets into a hot wall reactor, so as to prepare perovskite particles, using the droplet-to-particle spray approach (spray pyrolysis). Preliminary results show that the spray technology is the most successful method for the preparation of impurity-free perovskite particles and perovskite paste to deposit perovskite thin films. As a proof of concept, a perovskite solar cell with the paste prepared by the sprayed perovskite powder was successfully fabricated.
在这篇“纳米构想”论文中，提出、讨论并测试了三种制备甲基铵卤化铅钙钛矿颗粒的概念。第一个构想基于通过向反溶剂中添加钙钛矿前驱体溶液来进行钙钛矿颗粒的湿化学制备，以促进钙钛矿颗粒在溶液中沉淀。第二个构想基于对干燥形式的钙钛矿前驱体混合物进行研磨，以便使前驱体转化为钙钛矿颗粒。第三个构想基于通过喷嘴对钙钛矿溶液进行雾化，将喷雾液滴引入热壁反应器，从而采用液滴到颗粒的喷雾方法（喷雾热解）制备钙钛矿颗粒。初步结果表明，喷雾技术是制备无杂质钙钛矿颗粒和用于沉积钙钛矿薄膜的钙钛矿浆料的最成功方法。作为概念验证，成功制造了一个使用喷雾钙钛矿粉末制备的浆料的钙钛矿太阳能电池。
