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Investigation Regarding the Role of Chloride in Organic–Inorganic Halide Perovskites Obtained from Chloride Containing Precursors

Open access
Dar, M. Ibrahim, Arora, Neha, Gao, Peng, Ahmad, Shahzada, Grätzel, Michael, Nazeeruddin, Mohammad Khaja·2014·Nano Letters

Abstract

As the photovoltaic performance of a device is strongly influenced by the morphology of perovskite, achieving precise control over the crystal formation of organic-inorganic halide perovskites synthesized in the ambience of chloride ions has garnered much attention. Although the resulting morphology dictates the performance of the device considerably, the understanding of the role of chloride ions has been scant. To unravel this mystery, we investigated three different organic-inorganic halide perovskite materials grown from the chloride-containing precursors under different but optimized conditions. Despite the presence of chloride ions in the reaction mixture, scanning transmission electron microscopy- energy dispersive spectroscopy (STEM-EDS) reveals that the CH3NH3PbI3 perovskites formed are chloride-free. Moreover bright field transmission electron microscopy indicates that chloride ions effect the growth of the CH3NH3PbI3.

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Crossref · 10.1021/nl503279x

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Metadata

Authors
Dar, M. I., Arora, N., Gao, P., Ahmad, S., Grätzel, M., & Nazeeruddin, M. K.
Venue
Nano Letters
Published
2014-11-20
Volume
14
Issue
12
Pages
6991-6996
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2068257829
Cited by
193
References
1
FWCI
19.10
Type
journal article
Language
en
Open access
green

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