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Bismuth sulfide Powder

Bismuth sulfide Powder

Bismuth sulfide Powder
Product No NRE-11032
CAS 1345-07-9
Purity 99.9%
Formula Bi2S3
APS <40 µm (Can be Customized)
Color NA
Molecular Weight 514.16 g/mol
Density 7.7 g/mL
Melting Point NA
Boiling Point NA

Bismuth sulfide Powder

Bismuth sulfide powder is a non-toxic semiconductor with a lamellar structure that is held together by weak Bi-S bonds. It is a V-VI n-type crystalline semiconductor material belonging to the main group of AV-type metal chalcogenides 2BVI3 (A = Sb, Bi, As; B = S, Se, Te). It has a bandgap energy value of 1.3 eV, which is moderate but higher than the bandgap energy of other sulfides of the same group. This bandgap energy makes it a good active photocatalyst in the visible range of the solar spectrum. One of the most studied structural forms of bismuth sulfide is the 1D nanostructure. The ansiotropic character of the compound is due to the presence of Bi3+ and S2− arranged one above the other in infinite chains oriented along the [001] axis in an orthorhombic cell structure. The absorption coefficient of Bismuth sulfide powder is high (about 104 – 105 cm−1), making it a good light absorber. It has good electrical and optoelectronic properties. The bismuth sulfide conduction band consists of 6p Bi levels, which hybridizes with Sorbital 3p, while the valence band consists of 3p sulfur levels with a minimal contribution of 6p bismuth levels. They are majorlyn type due to the high value of the sulfur supply that allows them to control the electrical conductivity of the bismuth sulfide. The vector mobility and electron concentration of Bismuth sulfide powder are high and these properties are used in the application of solar cells. When transformed to the amorphous state, it has a low density of defects and this is due to the presence of the pendant bonds resulting from the alteration of the ordering of the structure. Like antimony selenide and sulfides, it forms layers and generally crystallizes as an orthorhombic structure.

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