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752622

Sigma-Aldrich

Iron disilicide

greener alternative

powder, -20 mesh, 99.9% trace metals basis

Synonym(s):

Iron silicide

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About This Item

Empirical Formula (Hill Notation):
FeSi2
CAS Number:
12022-99-0
Molecular Weight:
112.02
UNSPSC Code:
12352300
NACRES:
NA.23

Quality Level

100

Assay

99.9% trace metals basis

form

powder

greener alternative product characteristics

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

particle size

-20 mesh

mp

1220 °C (lit.)

greener alternative category

, Enabling

InChI

1S/Fe.2H2Si/h;2*1H2

InChI key

UVUDQHYBXBVHAI-UHFFFAOYSA-N

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General description

Iron disilicide (FeSi2) is a direct bandgap (0.85-0.87 eV) semiconductor material that has a high optical absorption coefficient, high Seebeck coefficient, high working temperature and high resistance to oxidation.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Application

FeSi2 can be used in a variety of optoelectronic applications such as lithium-ion batteries, light-emitting diodes (LEDs) and solar cells.

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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Meng, Q. S.; Fan, W. H.; Chen, R. X.; Munir, Z. A.
J. Alloy Compounds, 492, 303-303 (2010)
Gross, E.; Riffel, M.; Stoehrer, U.
Journal of Materials Research, 10, 34-34 (1995)
Enhanced Room-Temperature 1.6 mu Electroluminescence from Si-Based Double-Heterostructure Light-Emitting Diodes Using Iron Disilicide
Suzuno M, et al.
Japanese Journal of Applied Physics, 49(4S), 04DG16-04DG16 (2010)
Nishida, I.
Physical Review. B, Condensed Matter and Materials Physics, 7, 2710-2710 (1973)

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Silicides: Promising Thermoelectric Materials

The price of tellurium, a key component in many thermoelectric materials, has risen in recent years, leading to the search for more cost-effective substitutes. This article presents silicide materials as a cheaper potential alternative.

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