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Inducing swift nucleation morphology control for efficient planar pero…

Year of publication
Title of paper
Inducing swift nucleation morphology control for efficient planar perovskite solar cells by hot-air quenching
Author
[박태호교수 연구실]
Publication in journal
Journal of Materials Chemistry A 5, p3812-3818 (February 2017)
Publication date
20170228
[Abstract]
We introduce 1 step pin-hole free CH3NH3PbI3xClx perovskite layers by using heated airflow during the nucleation stage of the perovskite. Upon employing heated air, we stimulate uniformly distributed nuclei growth, resulting in a pin-hole free planar perovskite layer. We find an optimized heated airflow of 100 C as the optimized condition. The resulting planar device employing a conventional TiO2 electron transporting layer exhibits 17.6% average power conversion efficiency with 14.3% maximum powerpoint (MPP) efficiency. In addition, our method gives a very reproducible perovskite layer. Thus, our pin-hole free perovskite layer allows for 14.9% efficiency in a larger area device (0.71 cm2 ) that is generally prone to shunting paths.
 
DOI: 10.1039/C6TA0920F