Mesoporous PbI2 assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods

Content Provider	Semantic Scholar
Author	Li, Shibin Zhang, Peng Chen, Hao Wang, Yafei Liu, Detao Wu, Jiang Sarvari, Hojjatollah Chen, Zhi D.
Copyright Year	2017
Abstract	Perovskite solar cells (PSCs) have attracted great attention due to their low cost and high power conversion efficiency (PCE). However, the defects and grain boundaries in perovskite films dramatically degrade their performance. Here, we show a two-step annealing method to produce mesoporous PbI2 films for growth of continuous, pinhole-free perovskite films with large grains, followed by additional ethanol vapor annealing of perovskite films to reduce the defects and grain boundaries. The large perovskite grains dramatically suppress the carrier recombination, and consequently we obtain ZnO-nanorod-based PSCs that exhibit the best efficiency of 17.3%, with high reproducibility.
Starting Page	990
Ending Page	997
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1016/j.jpowsour.2017.01.024
Alternate Webpage(s)	http://discovery.ucl.ac.uk/1539112/1/Final%20accepted%20version.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.jpowsour.2017.01.024
Volume Number	342
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article