OPTICAL SUBSTRATE, SEMICONDUCTOR LIGHT-EMITTING UNIT AND METHOD OF MAKING SEMICONDUCTOR LIGHT-EMITTING UNIT Russian patent published in 2016 - IPC H01L33/22 

FIELD: physics.

SUBSTANCE: in optical substrate concave-convex structure includes plurality of convex and concave areas, provided between convex areas. Wherein central Pave interval between adjacent convex areas in concave-convex structure meets requirements 50 nm ≤ Pave ≤ 1,500 nm and convex area with height hn of convex part meeting requirements 0.6 h ≥ hn ≥ 0 h for average height Have of convex area, is present with probability Z meeting 1/10,000≤Z≤1/5.

EFFECT: technical result consists in increased efficiency of light emittance and increased internal quantum yield in LED unit, as well as in increased efficiency of light emittance and increased efficiency of electron injection.

31 cl, 50 dwg, 13 tbl