Přístupnostní navigace
E-application
Search Search Close
Publication detail
Sara Rahimnejad, Alexander Kovalenko, Sergio Martí Forés, Clara Aranda, Antonio Guerrero
Original Title
Coordination Chemistry Dictates the Structural Defects in Lead Halide Perovskites
Type
journal article in Web of Science
Language
English
Original Abstract
We show the influence of species present in precursor solution during formation of lead halide perovskite materials on the structural defects of the films. The coordination of lead by competing solvent molecules and iodide ions will dictate the type of complexes present in the films. Depending on the processing conditions all PbIS₅+, PbI₂S₄, PbI₃S₃¯, PbI₄S₂²¯, PbI₅S₁³¯, PbI₆⁴¯and 1-D (Pb₂I₄)n chains are observed by absorption measurements. Different parameters are studied like polarity of the solvent, concentration of iodide ions, concentration of solvent molecules and temperature. It is concluded that strongly coordinating solvents will preferentially form species with a low number of iodide ions and less coordinative solvents generate high concentration of PbI6-. We furthermore propose that all these plumbate ions may act as structural defects determining electronic properties of the photovoltaic films.
Keywords
perovskite, crystallization, solar cells
Authors
Released
12. 7. 2016
Publisher
Wiley
Location
USA
ISBN
1439-4235
Periodical
CHEMPHYSCHEM
Year of study
17
Number
18
State
Federal Republic of Germany
Pages from
2795
Pages to
2798
Pages count
4
URL
http://onlinelibrary.wiley.com/doi/10.1002/cphc.201600575/abstract
BibTex
@article{BUT129002, author="Alexander {Kovalenko}", title="Coordination Chemistry Dictates the Structural Defects in Lead Halide Perovskites", journal="CHEMPHYSCHEM", year="2016", volume="17", number="18", pages="2795--2798", doi="10.1002/cphc.201600575", issn="1439-4235", url="http://onlinelibrary.wiley.com/doi/10.1002/cphc.201600575/abstract" }