Light Emitting Module and Light Emitting System Including the Same

A light emitting device is disclosed. The light emitting device includes: a first window layer supplying electrons; a second window layer supplying holes; an active layer interposed between the first window layer and the second window layer; an electron regulation layer interposed between the first window layer and the active layer; a hole regulation layer interposed between the second window layer and the active layer; and an intermediate layer interposed between the second window layer and the hole regulation layer, wherein the intermediate layer has different roughnesses on upper and lower interfaces thereof.