Remnant PbI2, an unforeseen necessity in high-efficiency hybrid perovskite-based solar cells?

Perovskite-containing solar cells were fabricated in a two-step procedure in which PbI2 is deposited via spin-coating and subsequently converted to the CH3NH3PbI3 perovskite by dipping in a solution of CH3NH3I. By varying the dipping time from 5 s to 2 h, we observe that the device performance shows...

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Bibliographic Details
Main Authors: Duyen H. Cao, Constantinos C. Stoumpos, Christos D. Malliakas, Michael J. Katz, Omar K. Farha, Joseph T. Hupp, Mercouri G. Kanatzidis
Format: Article
Language:English
Published: AIP Publishing LLC 2014-09-01
Series:APL Materials
Online Access:http://dx.doi.org/10.1063/1.4895038