BiSeI — Properties & Data | MatWorld

BiSeI

Name: BiSeI
Brand: MatWorld

semiconductor

· BiSeI

BiSeI is a layered semiconductor compound composed of bismuth, selenium, and iodine, belonging to the family of mixed-halide chalcogenides. This material is primarily of research and developmental interest for next-generation optoelectronic and photovoltaic applications, where its layered structure and tunable band gap make it a candidate for thin-film solar cells, photodetectors, and two-dimensional device platforms. BiSeI and related compounds are being investigated as alternatives to conventional semiconductors in applications where controlled exfoliation and anisotropic electronic properties are advantageous, though widespread industrial adoption remains limited compared to mature semiconductor technologies.

experimental photovoltaicsphotodetectors and sensors2D materials researchthin-film optoelectronicslayered semiconductor devicesnext-generation solar cells

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	20.30	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	217.5	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)	9.180	GPa	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	6.828	kg/m³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)4 entries	1.280	eV	Measured
↳	1.320	eV	Measured
↳	1.529	eV	DFT · OptB88vdW
↳	2.224	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	66.86	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	12.17	-	DFT · OptB88vdW
↳	9.155	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.5167	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.467	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00233	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00172	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-196.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	327.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	18.19	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4354	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

BiSeI

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