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651486

Sigma-Aldrich

Gallium arsenide

(single crystal substrate), <100>, diam. × thickness 2 in. × 0.5 mm

Synonym(s):

Gallium monoarsenide

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About This Item

Linear Formula:
GaAs
CAS Number:
1303-00-0
Molecular Weight:
144.64
EC Number:
215-114-8
MDL number:
MFCD00011017
UNSPSC Code:
12352300
PubChem Substance ID:
24883832
NACRES:
NA.23

form

(single crystal substrate)

resistivity

≥1E7 Ω-cm

diam. × thickness

2 in. × 0.5 mm

density

5.31 g/mL at 25 °C (lit.)

semiconductor properties

<100>

SMILES string

[Ga]#[As]

InChI

1S/As.Ga

InChI key

JBRZTFJDHDCESZ-UHFFFAOYSA-N

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Physical properties

Mobility >=4500 cm2 · V-1 · S-1
Undoped (Si-type semiconductor), EPD < 5 × 104 cm-2, growth technique = LEC & HB

Physical form

cubic (a = 5.6533 Å)

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H350,H360F,H372

Hazard Classifications

Carc. 1B - Repr. 1B - STOT RE 1

Target Organs

Respiratory system,hematopoietic system

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Chao-Wei Hsu et al.
Nanotechnology, 23(49), 495306-495306 (2012-11-17)
GaAs is grown by metal-organic vapor-phase epitaxy on a 55 nm round-hole patterned Si substrate with SiO(2) as a mask. The threading dislocations, which are stacked on the lowest energy facet plane, move along the SiO(2) walls, reducing the number
Chan Il Yeo et al.
Optics express, 20(17), 19554-19562 (2012-10-06)
We present a simple, cost-effective, large scale fabrication technique for antireflective disordered subwavelength structures (d-SWSs) on GaAs substrate by Ag etch masks formed using spin-coated Ag ink and subsequent inductively coupled plasma (ICP) etching process. The antireflection characteristics of GaAs
Yu Bomze et al.
Physical review letters, 109(2), 026801-026801 (2012-10-04)
We report on measurements of first-passage-time distributions associated with current switching in weakly coupled GaAs/AlAs superlattices driven by shot noise, a system that is both far from equilibrium and high dimensional. Static current-voltage (I-V) characteristics exhibit multiple current branches and
Shih-Wei Tan et al.
PloS one, 7(11), e50681-e50681 (2012-12-12)
Characterization and modeling of metal-semiconductor-metal (MSM) GaAs diodes using to evaporate SiO₂ and Pd simultaneously as a mixture electrode (called M-MSM diodes) compared with similar to evaporate Pd as the electrode (called Pd-MSM diodes) were reported. The barrier height (φ(b))
Kazuue Fujita et al.
Optics express, 20(18), 20647-20658 (2012-10-06)
Device-performances of 3.7 THz indirect-pumping quantum-cascade lasers are demonstrated in an InGaAs/InAlAs material system grown by metal-organic vapor-phase epitaxy. The lasers show a low threshold-current-density of ~420 A/cm2 and a peak output power of ~8 mW at 7 K, no
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