Further, there has also been known that a transparent electroconductive layer having an uneven surface is formed between the reflection layer and {HEAD ~ the semiconductor layer} to obtain {TAIL ~ a light confining effect} that an optical distance of reflected light is prolonged to obtain an effect of suppressing an excessive current flowing at the time of an occurrence of a shunt phenomenon 
to obtain
Further , there has also been known that a transparent electroconductive layer having an uneven surface is formed between the reflection layer and { HEAD ~ the semiconductor layer } to obtain { TAIL ~ a light confining effect } that an optical distance of reflected light is prolonged to obtain an effect of suppressing an excessive current flowing at the time of an occurrence of a shunt phenomenon
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH