A light emitting diode with enhanced luminance and a method for manufacturing the light emitting diode are provided. The light emitting diode includes a substrate, a passivation layer including a material selected from a group consisting of a metal alloy, a metal oxide, a metal nitride, organic materials, inorganic materials and a combination thereof, a reflection layer, a first semiconductor layer, a multi-layer quantum well structure and a second semiconductor layer. The substrate possesses excellent electric/thermal conductivities.