Patent ID: 8507925
Filing Date: 2013-08-13
Classification: H01L,H01S

Abstract:
1. An optoelectronic device, comprising: a substrate having a first surface and a normal direction perpendicular to the first surface; a plurality of the first semiconductor rods formed on the first surface of the substrate, contacted with the substrate, and exposed partial of the first surface of the substrate; a first protection layer formed on the sidewall of the plurality of the first semiconductor rods and the exposed partial of the first surface of the substrate; a first buffer layer formed on the plurality of the first semiconductor rods wherein the first buffer layer having a first surface and a second surface opposite to the first surface, and the plurality of the first semiconductor rods directly contacted with the first surface; and at least one first hollow component formed among the first semiconductor rods, the first surface of the substrate, and the first surface of the first buffer layer, wherein the width of the first hollow component is further defined as the largest size of the first hollow component perpendicular to the normal direction of the substrate and the height of the first hollow component is further defined as the largest size of the first hollow component parallel with the normal direction of the substrate and the ratio of the height and the width of the first hollow component is 1/5-3.