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“chemical”
Chemical Elements Chart History, Part 1 of 2
History of the Chemical Elements Table unit.
Chemical Elements Chart History, Part 1 of 2
History of the Chemical Elements Table unit.
This entry is located in the following unit:
Units of Special Compositions, Topics, or Subjects That Provide Special Information
(page 3)
Chemical Elements List
Chemical Elements are Listed with Links to Information about Each Chemical Element unit.
Chemical Elements List
Chemical Elements are Listed with Links to Information about Each Chemical Element unit.
This entry is located in the following unit:
Units of Special Compositions, Topics, or Subjects That Provide Special Information
(page 3)
chemical vapor deposition; CVD
A method of depositing thin semiconductor films used to make certain types of photovoltaic devices.
With this method, a substrate is exposed to one or more vaporized compounds, one or more of which contain desirable constituents.
A chemical reaction is initiated, at or near the substrate surface, to produce the desired material that will condense on the substrate.
This entry is located in the following unit:
Photovoltaic Conversion Efficiency Terms +
(page 4)
chemical weathering
- Carbonation, the breakdown of calcite by reaction with carbonic acid in rainwater.
- Hydrolysis, a breakdown of feldspar into china clay by reaction with carbonic aid in rainwater.
- Oxidation, the breakdown of iron-rich minerals due to rusting.
- Hydration, an expansion certain minerals due to the uptake of water.
This entry is located in the following unit:
Meteorology or Weather Terms +
(page 2)
metal-organic chemical vapor deposition, MOCVD
A process of producing materials for semiconductors, including photovoltaic material, in which a surface layer is produced by the deposition on a substrate of a volatile organo-metallic compound; such as, methyl, which is transported to the surface through the gas phase at elevated temperatures.
This entry is located in the following unit:
Metallurgy Topics or Metal Technology +
(page 2)