In2O3 — Properties & Data | MatWorld

In2O3

semiconductor

· In2O3

Indium oxide (In₂O₃) is a transparent conducting oxide semiconductor with a wide bandgap, combining electrical conductivity with optical transparency in the visible spectrum. It is widely used in optoelectronic and photovoltaic applications, particularly as a transparent electrode material in liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs), and thin-film solar cells, often alloyed with tin (ITO) to enhance conductivity. Engineers select In₂O₃-based materials when applications require simultaneous light transmission and electrical function, though the material's indium content and cost drive consideration of alternative transparent conducting oxides in cost-sensitive applications.

transparent electrodesLCD and OLED displaysphotovoltaic devicesthin-film solar cellsoptoelectronic sensorsgas sensing applications

Compliance & Regulations

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

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)2 entries	145.2	GPa	—
↳	159.1	GPa	—
Poisson's Ratio(ν)	0.3200	-	—
Shear Modulus(G)2 entries	57.62	GPa	—
↳	62.43	GPa	—

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
Thermal Conductivity(k)2 entries	9.669	W/(m·K)	—
↳	9.669	W/(m·K)	27°C

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
Density(ρ)	7.026	kg/m³	—

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Property	Value	Unit	Conditions	Source
Band Gap(Eg)3 entries	2.800	eV	—
↳	0.7530	eV	—
↳	1.195	eV	—
Dielectric Constant (Relative Permittivity)(εr)	9.192 range 5.182–13.20median of 2 measurements	-	—
Electrical Conductivity(σ)	73.97	S/cm	27°C
Electrical Resistivity(ρe)	0.000135	Ω·m	27°C
Magnetic Moment(μB)	0.000	µB	—
Thermoelectric Power Factor(PF)	0.000180	W/(m·K²)	27°C
Seebeck Coefficient(S)2 entries	-156.1	μV/K	27°C
↳	-53.71	µV/K	—
Thermoelectric Figure of Merit(zT)	0.00559	-	27°C

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	—
Formation Energy(ΔHf)3 entries	-1.738	eV/atom	—
↳	-1.913	eV/atom	—
↳	-1.703	eV/atom	—

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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Regulatory Screening

Environmental

Export Control

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.