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202134

Sigma-Aldrich

Cesium iodide

99.9% trace metals basis

Synonym(s):

Caesium iodide, Caesium monoiodide

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About This Item

Empirical Formula (Hill Notation):
CsI
CAS Number:
7789-17-5
Molecular Weight:
259.81
EC Number:
232-145-2
MDL number:
MFCD00010962
UNSPSC Code:
12352302
PubChem Substance ID:
24852041
NACRES:
NA.23

Assay

99.9% trace metals basis

form

powder

impurities

≤1500.0 ppm Trace Metal Analysis

mp

626 °C (lit.)

density

4.51 g/mL at 25 °C (lit.)

SMILES string

[I-].[Cs+]

InChI

1S/Cs.HI/h;1H/q+1;/p-1

InChI key

XQPRBTXUXXVTKB-UHFFFAOYSA-M

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Application

Cesium iodide (CsI) can be used as a cathode for the fabrication of field emission cathodes for potential usage in high power microwave systems. It can also be used to form an interface layer between the blocking layer and the perovskite active layer to improve the photovoltaic performance and stability of solar cells.

Features and Benefits

Frequently used in devices such as phosphor screens for medical imaging, scintillators, calorimeters and a variety of particle detectors.

Pictograms

Health hazardEnvironment
GHS08,GHS09

Signal Word

Warning

Hazard Statements

H361fd,H400

Hazard Classifications

Aquatic Acute 1 - Repr. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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Low level plasma formation in a carbon velvet cesium iodide coated cathode
Shiffler D, et al.
Physics of Plasmas, 11(4), 1680-1684 (2004)
Comparison of velvet-and cesium iodide-coated carbon fiber cathodes
Shiffler D, et al.
IEEE transactions on nuclear science, 29(3), 445-451 (2001)
Olga Nazarenko et al.
Inorganic chemistry, 56(19), 11552-11564 (2017-09-13)
Interest in hybrid organic-inorganic lead halide compounds with perovskite-like two-dimensional crystal structures is growing due to the unique electronic and optoelectronic properties of these compounds. Herein, we demonstrate the synthesis, thermal and optical properties, and calculations of the electronic band
Cong Chen et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 6(11), 1802046-1802046 (2019-06-11)
Photovoltaic devices employing lead halide perovskites as the photoactive layer have attracted enormous attention due to their commercialization potential. Yet, there exists challenges on the way to the practical use of perovskite solar cells (PSCs), such as light stability and
Taehwan Jun et al.
Advanced materials (Deerfield Beach, Fla.), 30(43), e1804547-e1804547 (2018-09-15)
Halide perovskites, including CsPbX3 (X = Cl, Br, I), have gained much attention in the field of optoelectronics. However, the toxicity of Pb and the low photoluminescence quantum yield (PLQY) of these perovskites hamper their use. In this work, new
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