Patent ID: 9520441
Filing Date: 2016-12-13
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a first insulator layer formed of a material, overlying a substrate, the first insulator layer having a thickness which minimizes reflection in a predetermined wavelength range based upon the wavelength range and an index of refraction of the material; a conductive layer substantially overlying the first insulator layer, wherein the conductive layer is optically transparent; a second insulator overlying the conductive layer, wherein an interface is formed between the conductive layer and the second insulator layer, and wherein the conductive layer causes band bending proximal to the interface such that the interface is electrically pinned; and a seed layer overlying the second insulator layer; an epitaxial layer grown substantially overlying the seed layer; a metal contact on the epitaxial layer extending to the conductive layer; and one or more anti-reflective coating layers deposited on the first insulator layer to function as an antireflective coating stack, wherein the semiconductor device is configured such that electromagnetic radiation received through the one or more anti-reflective coating layers is absorbed in at least one of the seed layer and the epitaxial layer.