材料科学
钙钛矿(结构)
制作
结晶
沉积(地质)
图层(电子)
光伏系统
基质(水族馆)
蒸发
光电子学
涂层
薄膜
机械工程
纳米技术
电气工程
化学工程
气象学
工程类
物理
地质学
病理
古生物学
海洋学
生物
替代医学
医学
沉积物
作者
Elvira Ramírez,Jaimie Velasquez,A. Flórez,Juan Felipe Montoya,Rafael Betancur,Franklin Jaramillo
标识
DOI:10.1002/adem.202200964
摘要
Perovskite solar technology stands on three different pillars: efficiency, stability, and processability. Focusing on processability, the field demands the achievement of optoelectronic grade active layers with high uniformity fabricated by industry‐compatible methods. Herein, the design and implementation of an air knife on a blade coating deposition system, which allows controlling the evaporation rate of the solvents improving the crystallization and uniformity of perovskite films in a p–i–n device are reported. The effect of doctor blade operational parameters is studied using image analysis combined with a machine learning method to identify the most relevant processing variables leading to a uniform perovskite layer with optimal thickness. After implementing the air knife system and finding the best processing conditions, a special perovskite solar minimodule enabling the evaluation of single inner subcells is fabricated. These perovskite subcells reach an average efficiency of 10.1% and remarkably all the subcells deviate less than 20% from this value over a large‐area substrate. These results demonstrate the promising potential of this fabrication method for low cost and high deposition rate photovoltaic devices, which is on the path to mass production.
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