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Sigma-Aldrich

Guanidinium iodide

greener alternative

≥99%

Synonym(s):

Aminoformamidine hydriode, Diaminomethaniminium iodide, Greatcell Solar®, Guanidine hydriodide, Guanidine monohydroiodide

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About This Item

Empirical Formula (Hill Notation):
CH6IN3
CAS Number:
19227-70-4
Molecular Weight:
186.98
UNSPSC Code:
12352302
NACRES:
NA.23

Quality Level

100

Assay

≥99%

form

powder

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

mp

194-199 °C

greener alternative category

, Enabling

SMILES string

[nH2+]c([nH])[nH].[I-]

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General description

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Application

Guanidinium iodide (GI) belongs to the class of guanidinium salts that crystallize in polar symmetry. It can be used as a passivating material for enhancing the grain boundaries and improving the open-circuit voltage. It can further be used in the fabrication of polymeric solar cells (PSCs).
The iodide and bromide based alkylated halides find applications as precursors for fabrication of perovskites for photovoltaic applications.

Legal Information

Product of Greatcell Solar Materials Pty Ltd.Greatcell Solar is a registered trademark of Greatcell Solar Materials Pty Ltd.
Greatcell Solar is a registered trademark of Greatcell Solar

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H319,H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Perovskite solar cells yielding reproducible photovoltage of 1.20 V
Alharbi EA, et al.
Research (Washington, D.C.), 2019, 8474698-8474698 (2019)
Origin of spontaneous polarization and reconstructive phase transition in guanidinium iodide
Szafranski M and Jarek M
CrystEngComm, 15(23), 4617-4623 (2013)
Investigation of formamidinium and guanidinium lead tri-iodide powders as precursors for solar cells
Dimesso L, et al.
Materials Science and Engineering, B, 204, 27-33 (2016)
Nam Joong Jeon et al.
Nature, 517(7535), 476-480 (2015-01-07)
Of the many materials and methodologies aimed at producing low-cost, efficient photovoltaic cells, inorganic-organic lead halide perovskite materials appear particularly promising for next-generation solar devices owing to their high power conversion efficiency. The highest efficiencies reported for perovskite solar cells
Wei Zhang et al.
Nano letters, 15(3), 1698-1702 (2015-02-05)
The performance of perovskite solar cells has been progressing over the past few years and efficiency is likely to continue to increase. However, a negative aspect for the integration of perovskite solar cells in the built environment is that the
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