| 简介 |
It be extremely low work function for electrons thermionic and photoelectric generators with materials claimed, which have high efficiencies and can be used for the direct conversion of heat into electricity or light. Low work function consist of intermetallic compounds such as
[...]
or
anti-moons
The materials,
[...][...]
of rare earth metals or the,
[...]
,
[...]
, aluminides,
[...]
,
[...]
,
[...][...]
of rare earth metals or alkali or alkaline-earth metals or rare earth metals or of alkaline earth metals from. Here act cesium, calcium, strontium, barium or rare earth elements as electron donors and arsenic, antimony, bismuth, germanium, tin, lead, aluminum, gallium, indium or magnesium as electron acceptors thallium. By in the solid intermetallic compounds soluble excess of electron donors whose work function a is strongly decreased. "Hot" electrons can optically generated via as Thermally simultaneously used
thermalization
be prevented and the Schottky-transitions. The materials extremely low work function as emitters in the thermionic cooling may also, in inorganic or organic light emitting diodes, guns,
low-light enhancers
, are used as cold cathodes
[...]
or in general. |
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