LIGHT EMITTING DEVICE FOR IMPROVING OPTICAL GAIN BY REDUCING ELECTRIC FIELD INSIDE A QUANTUM WELL STRUCTURE

摘要

PURPOSE: A light emitting device is provided to minimize piezo and spontaneous polarization using ternary superlattice barrier layer without the formation of quaternary film barrier layer.;CONSTITUTION: A light emitting layer(103) comprises a barrier formed into an active layer and a superlattice layer. The superlattice layer is arranged on the upper and lower parts of the active layer. The superlattice layer reduces the sum of the electric field due to spontaneous polarization and the electric field due to piezo. An N type contact layer(102) is used in order to inject the electronics into the light-emitting layer. A P-type contact layer(104) is arranged to face N type contact layer to boundary with the light-emitting layer.;COPYRIGHT KIPO 2010