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About LED |
The light-emitting diode
LED is a semiconductor light-emitting device solid, and
it is used as a solid semiconductor chips luminous
materials, when the two ends of the forward voltage,
semiconductor carrier in a compound arising from photon
emission light.
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Luminescent LED structure
and principle |
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LED basic structure is an electroluminescent
semiconductor materials, placed on the airs of a lead,
and then sealed with epoxy resin around, the protection
of internally cored wire played the role of the seismic
performance of LED so good. |
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LED is the core of the
p-type and n-type semiconductor composed of
semiconductor chips, in the p-type and n-type
semiconductor there is a transition layer between the
semiconductor called pn junction.In some of the PN
junction semiconductor material in the injected carrier
minority and the majority compound when the carrier will
be redundant in the form of light energy to release,
thereby directly converted to electric energy. PN
junction reverse voltage increases, the minority-carrier
injection difficult, it does not luminous.
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