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Issue 16, 2015
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CH3NH3PbI3 from non-iodide lead salts for perovskite solar cells via the formation of PbI2

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Abstract

We report the formation of CH3NH3PbI3 from more soluble, non-iodide lead salts like Pb(SCN)2 and Pb(NO3)2. When exposed to CH3NH3I vapours, the colourless lead salts turned yellow before the formation of the black perovskite. Investigation of this yellow intermediate suggests that anion exchange (converting lead salts to PbI2) precedes the perovskite formation. PCEs of 7.6% and 8.4% were achieved for the devices formed from Pb(SCN)2 and Pb(NO3)2, respectively.

Graphical abstract: CH3NH3PbI3 from non-iodide lead salts for perovskite solar cells via the formation of PbI2

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Supplementary files

Article information


Submitted
06 Jan 2015
Accepted
19 Mar 2015
First published
25 Mar 2015

Phys. Chem. Chem. Phys., 2015,17, 10369-10372
Article type
Communication
Author version available

CH3NH3PbI3 from non-iodide lead salts for perovskite solar cells via the formation of PbI2

G. Balaji, P. H. Joshi, H. A. Abbas, L. Zhang, R. Kottokkaran, M. Samiee, M. Noack and V. L. Dalal, Phys. Chem. Chem. Phys., 2015, 17, 10369
DOI: 10.1039/C5CP00073D

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