K2RbSb — Properties & Data | MatWorld

K2RbSb

Name: K2RbSb
Brand: MatWorld

semiconductor

· K2RbSb

K2RbSb is an intermetallic semiconductor compound composed of potassium, rubidium, and antimony, belonging to the class of ternary semiconductors and Zintl phases. This is primarily a research material studied for its electronic band structure and potential optoelectronic properties rather than an established commercial material. The compound is of interest in solid-state physics and materials chemistry for exploring how mixed-cation alkali metal combinations affect semiconductor behavior, with potential applications in photovoltaics, thermoelectrics, or specialized electronic devices where unconventional band gaps and crystal structures offer advantages over traditional semiconductors.

photovoltaic researchthermoelectric materialsoptoelectronics developmentsolid-state physics studiesexperimental semiconductorsZintl phase compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	15.17	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	10.78	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.107	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)3 entries	1.033	eV	DFT · OptB88vdW
↳	1.961	eV	DFT · TBmBJ
↳	1.200	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)	15.37	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.683	-	DFT · OptB88vdW
↳	5.347	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.1700	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.240	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	0.000306	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00207	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-51.66	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	445.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	23.83	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5103	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

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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.

K2RbSb

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Physical Properties

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