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215066

Sigma-Aldrich

Gallium(III) oxide

≥99.99% trace metals basis

Synonym(s):

Gallium trioxide

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About This Item

Empirical Formula (Hill Notation):
Ga2O3
CAS Number:
12024-21-4
Molecular Weight:
187.44
EC Number:
234-691-7
MDL number:
MFCD00011020
UNSPSC Code:
12352303
PubChem Substance ID:
24852864
NACRES:
NA.23

Assay

≥99.99% trace metals basis

form

(crystalline powder)

reaction suitability

reagent type: catalyst
core: gallium

density

5.88 g/mL at 25 °C

SMILES string

O=[Ga]O[Ga]=O

InChI

1S/2Ga.3O

InChI key

QZQVBEXLDFYHSR-UHFFFAOYSA-N

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General description

Gallium(III) oxide (Ga2O3) is a wide band gap semiconductor that belongs to a family of transparent semiconducting oxides (TSO). It can form different polymorphs such as α-,β-, γ-, δ-, and ε-. Polycrystalline and nanocrystalline Ga2O3 can be prepared using several methods such as chemical vapor deposition, thermal vaporization, and sublimation, molecular beam epitaxy, melt growth, etc. It is widely used as a functional material in various applications including optoelectronics, chemical sensors, catalysis, semiconductor devices, field-effect transistors, and many others.

Application

Ga2O3 is widely used as a host material for the fabrication of electroluminescent devices. For example, europium-doped Ga2O3 thin films can be used as a light-emitting layer to fabricate an optically transparent electroluminescent device.

Due to its distinct optical and electrical properties like moderate conductivity and high laser damage threshold, Ga2O3 can be used in laser-driven electron accelerators, low-loss plasmonics, and Si-based dielectric laser accelerators.

It can also be used as an effective catalyst for the dehydrogenation of propane to propene.
Starting material for the preparation of Sr2CuGaO3S, an example of a rare square pyramidal gallium.

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

215066-VAR:
215066-10G:
215066-BULK:
215066-50G:
215066-1KG:
215066-100G:

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Bipin Pandey et al.
Langmuir : the ACS journal of surfaces and colloids, 28(38), 13705-13711 (2012-09-01)
This paper reports the formation of self-organized nanoporous gallium oxide by anodization of solid gallium metal. Because of its low melting point (ca. 30 °C), metallic gallium can be shaped into flexible structures, permitting the fabrication of nanoporous anodic oxide
Vladimir N Sigaev et al.
Nanoscale, 5(1), 299-306 (2012-11-21)
Nanoparticles in amorphous oxides are a powerful tool for embedding a wide range of functions in optical glasses, which are still the best solutions in several applications in the ever growing field of photonics. However, the control of the nanoparticle
Sr(2)CuGaO(3)S, a Rare Example of Square Pyramidal Gallium.
W. J. Zhu et al.
Inorganic chemistry, 36(17), 3576-3577 (1997-08-13)
Yi-Jen Wu et al.
ACS nano, 4(3), 1393-1398 (2010-02-13)
Light-scattering properties of individual gold-in-Ga(2)O(3) peapod nanowires and gold-in-Ga(2)O(3) core/shell nanowires were investigated by optical dark-field microscopy. The observed scattering peaks are suggested to result from plasmonic resonance of the gold nanopeas and nanorods in the Ga(2)O(3) nanowires. As the
Rujia Zou et al.
Small (Weinheim an der Bergstrasse, Germany), 7(23), 3377-3384 (2011-10-06)
Nanoelectromechanical system switches are seen as key devices for fast switching in communication networks since they can be switched between transmitting and receiving states with an electrostatic command. Herein, the fabrication of practical, nanoscale electrically/thermally driven switches is reported based
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