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Perovskite Solar Cells: Halogen Engineering for Operationally Stable Perovskite Solar Cells via Sequential Deposition (Adv. Energy Mater. 46/2019)
Author(s) -
Li Qi,
Zhao Yao,
Zhou Wenke,
Han Zhengyuan,
Fu Rui,
Lin Fang,
Yu Dapeng,
Zhao Qing
Publication year - 2019
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201970183
Subject(s) - perovskite (structure) , materials science , bromine , deposition (geology) , chemical engineering , halogen , seeding , metallurgy , organic chemistry , chemistry , agronomy , paleontology , alkyl , sediment , engineering , biology
In article number 1902239 Qing Zhao and co‐workers devise a Br‐rich seeding growth method to fabricate high‐quality FAPbI 3 ‐based perovskite films with high bromine content. Submicron‐sized crystalline perovskite seeds are embedded in PbI 2 film during the first step in sequential deposition, just like farmers sow seeds in the ground during spring. The perovskite seeds act as a source of Br for the final film. In the Br‐rich seeding growth method, the perovskite seeds contain much more bromine (depicted as green balls with blue balls representing iodine), compared with a typical FAPbI 3 ‐based perovskite composition.