| 摘要 |
A semiconductor chip, in particular a light-emitting diode, has a substrate ( 2 ), on which a sequence of semiconductor layers ( 3 ) with an active zone ( 5 ) has been applied. Above the sequence of semiconductor layers ( 3 ) there is a stepped window layer ( 6 ), which is structured in the manner of a Fresnel lens and has with regard to the coupling out of radiation the function of a hemispherical lens ( 7 ). This produces a semiconductor chip with particularly high coupling-out efficiency.
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