MANUFACTURING METHOD OF SEMICONDUCTOR SUBSTRATE HAVING MASK PATTERN FOR HIGH QUALITY SEMICONDUCTOR DEVICE

摘要

The present invention relates to a high quality semiconductor substrate manufacturing method including a step of forming a nitride semiconductor layer and a mask patter on a substrate such as a sapphire substrate, a step of reforming the surface to become porous using a dry etching method before or after growing the nitride semiconductor layer once again, a step of re-growing the nitride semiconductor layer with a low defect density as a template layer, and a step of producing a high quality semiconductor device with an improved inner quantum yield and a light extraction efficiency. [Reference numerals] (S10) Form a nitride semiconductor layer;(S20) Form an insulating film pattern;(S30) Dry porous etch;(S40) Re-grow the nitride semiconductor layer