Patent ID: 8686529
Filing Date: 2014-04-01
Classification: H01L,Y02E

Abstract:
1. A dual junction photodiode semiconductor device comprising: a. a semiconductor substrate of a first conductivity type; b. a first impurity region of a second conductivity type formed epitaxially on said semiconductor substrate; c. a second impurity region of the first conductivity type shallowly formed in said epitaxially formed first impurity region; d. a first PN junction formed between said epitaxially formed first impurity region and said second impurity region, wherein said first PN junction exhibits a first responsivity profile to a first wavelength of light; e. a second PN junction formed between said semiconductor substrate and said epitaxially formed first impurity region, wherein said second PN junction exhibits a second responsivity profile to a second wavelength of light and wherein each of said first responsivity profile and said second responsivity profile have a peak responsivity greater than 0.3 A/W; and f. at least one passivated V-groove etched into the said epitaxially formed first impurity region and the said semiconductor substrate.