Gallium arsenide pieces, % trace metals basis; CAS Number: AsGa; find Sigma-Aldrich MSDS, related peer-reviewed papers, technical. SAFETY DATA SHEET. GALLIUM ARSENIDE OPTICAL CRYSTAL. According to Regulation (EC) No/ (REACH). Revision MATERIAL SAFETY DATA SHEET. I. PRODUCT IDENTIFICATION. Trade Name: Gallium Arsenide. Synonym: Gallium Monoarsenide. Formula: GaAs. CAS #.
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The GaAs solar cells, manufactured by Kvant, were chosen because of their higher performance in high temperature environments.
Results 1 to 6 of 6. This is a result of higher carrier mobilities and lower resistive device parasitics.
The first known operational use of GaAs solar cells in space was for the Venera 3 mission, launched in Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Short term exposure limit LC The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. The Chemistry of the Semiconductor Industry. Gallium arsenide GaAs gaaas an important semiconductor material for high-cost, high-efficiency solar cells and is used for single-crystalline thin film solar cells and for multi-junction solar cells.
Another advantage of GaAs is that it has a direct band gapwhich means that it can be used to absorb and emit light efficiently. If a GaAs boule is grown with excess arsenic present, it gets certain defectsin particular arsenic antisite defects an arsenic atom at a gallium atom site within the crystal lattice.
These processors were several times faster and several orders of magnitude more radiation proof than silicon counterparts, but were more expensive. When heated to decomposition, this compound emits very toxic fumes of arsenic. Molten gallium arsenide attacks quartz. If not breathing, give artificial respiration.
SAFETY DATA SHEETS
Discharge into the environment must be avoided. Evacuate personnel to safe areas. Mxds protection Wear dust mask when handling large quantities. I love deadlines- I like the whooshing sound they make as they fly by.
GaAs does not have a native oxide, does not easily support a stable adherent insulating layer, and does not possess the dielectric strength or surface passivating qualities of the Si-SiO 2.
GaAs – Gallium Arsenide Wafer Technology offers single crystal gallium arsenide grown at low pressure from high purity polycrystalline gallium arsenide in a vertical temperature gradient VGF-Vertical Gradient Freeeze.
I’m gonna “no bid” on this one and offer him Germanium instead. The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. GaAs can be used for various transistor types: Do not work with any dust from any semiconductor period. Journal of Crystal Growth. Store in well ventilated area away from food or food products and combustible materials.
Establish a patent airway. I have an enquiry from a customer but I hear the stuff, although not intrinsicaly toxic, can libreate Arenic and Gallium compounds which, when in contact with water, acids or alkalais can give off nasty stuff. If breathed in, move person into fresh air.
The economies of scale available to the silicon industry has also hindered the adoption of GaAs. I mscs in university department where they make mscs diodes from GaAs wafers and they take every precaution to avoid direct contact to bulk material or GaAs dust.
National Institutes of Health. Critical Reviews in Toxicology.
Gallium arsenide – Wikipedia
GaAs could be quite dangerous stuff. In the s, GaAs solar cells took over from silicon as the cell type most commonly used for photovoltaic arrays for satellite applications.
If you do not see the specification you require, please ask for details. Because GaAs and AlAs have almost the same lattice constantthe layers have very little induced strain msdds, which allows them to be grown almost arbitrarily thick. As a wide direct band gap vaas with resulting resistance to radiation damage, GaAs is an excellent material for outer space electronics and optical windows in high power applications.
Stability and reactivity Avoid exposure – obtain special instructions before use. Also many solar cars utilize GaAs in solar arrays.