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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
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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.[1]

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

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Certificates of Analysis (COA)

Lot/Batch Number
STBL4588
STBK8242
STBK2547
STBJ8092
STBJ4829

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The rate of charge tunneling through self-assembled monolayers is insensitive to many functional group substitutions.
Hyo Jae Yoon et al.
Angewandte Chemie (International ed. in English), 51(19), 4658-4661 (2012-04-17)
G Wilma Busser et al.
ChemSusChem, 5(11), 2200-2206 (2012-10-24)
The deposition of hydrogen evolution sites on photocatalysts is a crucial step in the multistep process of synthesizing a catalyst that is active for overall photocatalytic water splitting. An alternative approach to conventional photodeposition was developed, applying the photocatalytic reforming
Farheen N Sayed et al.
Journal of nanoscience and nanotechnology, 11(4), 3363-3369 (2011-07-23)
We report on the structural and magnetic properties of nanoparticles of NiGa2O4 and 5 at.% M doped (M = Mn2+, Cu2+, Co2+, Fe3+ and Tb3+) at Ga site of NiGa2O4, synthesized by gel-combustion method. The particle size, as investigated by
Naoya Kumagai et al.
Chemical communications (Cambridge, England), 47(6), 1884-1886 (2010-12-07)
Using the Rh(3+) ion (Rh d(6)) in a regular octahedral coordination, which forms fully occupied t(2g)(6) and empty e(g)(0) as a result of ligand-field splitting, we demonstrated that Rh-doped ZnGa(2)O(4) had midgap states created by t(2g)(6) and e(g)(0) that had
Baoxiu Zhao et al.
Journal of environmental sciences (China), 24(4), 774-780 (2012-08-17)
Perfluorooctanoic acid (PFOA) is a new-found hazardous persistent organic pollutant, and it is resistant to decomposition by hydroxyl radical (HO*) due to its stable chemical structure and the high electronegativity of fluorine. Photocatalytic reduction of PFOA with beta-Ga2O3 in anoxic
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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. 1. β-Ga2O3 powder로 받을 수 있을까요? 2. 받을 수 있는 particle size를 알고 싶습니다.

    1 answer

    1. The particle size of this product has not been determined. This material is assigned an appearance specification of crystalline powder. Please see the link below to review a sample Certificate of Analysis:
      https://www.sigmaaldrich.com/certificates/Graphics/COfAInfo/fluka/pdf/PDF739379.pdf

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