Patent ID: 8143687
Filing Date: 2012-03-27
Classification: H01L

Abstract:
1. A broadband radiation detector comprising: a first layer having a first electrical conductivity type; a second layer having a second electrical conductivity type and an energy bandgap responsive to radiation in a first spectral region comprising a first plurality of wavelengths; a third layer having the second electrical conductivity type and an energy bandgap responsive to radiation in a second spectral region comprising at least one wavelength that is longer than each of the first plurality of wavelengths of the first spectral region; and a plurality of internal regions, each of the plurality of internal regions disposed at least partially within the third layer, and each of the plurality of internal regions comprising a refractive index that is different from a refractive index of the third layer; wherein the plurality of internal regions are arranged according to a regularly repeating pattern.