METHOD OF FORMING A LIGHT EMITTING DIODE MODULE

摘要

A light emitting diode module includes a transparent semiconductor having a refractive index of 2.7 ± 1.2, a polymer layer disposed on the transparent semiconductor and having a refractive index of 1.5 ± 0.1, and a compositional graded coating (CGC) disposed on the transparent semiconductor and sandwiched between the transparent semiconductor and the polymer layer. The CGC has a thickness and a refractive index varying along the thickness from a first refractive index from (2.2 ± 0.5 to 3.3 ± 0.4) at a first end to a second refractive index of 1.5 ± 0.2 at a second end adjacent to the polymer layer. The CGC also includes a gradient including SiC:H and (SiOCN:H; SiOC:H; and/or Si:H) along the thickness. The module is formed by continuously depositing the CGC on the transparent semiconductor using chemical vapor deposition, and subsequently disposing the polymer layer on the CGC.