Patent ID: 6661075
Filing Date: 2003-12-09
Classification: H01L

Abstract:
A pn junction diode having a breakdown voltage, comprising:a. an active pn junction including a first side, a second side and a metallurgical junction between said first and second sides, said active pn junction having a leakage current density of no greater than 1Ã—10âˆ’2 A/cm2 at a reverse-bias voltage of approximately 15% of the breakdown voltage of the pn junction diode; b. a substrate including one of Si and Ge, said substrate having a cleaned surface cleaned to remove contamination from exposure to air and being doped with a first dopant of either a p-type or an n-type so as to form said first side of said active pn junction; and c. a chemical vapor deposited epitaxial layer deposited onto said cleaned surface at least a portion of said chemical vapor deposited epitaxial layer being doped with a second dopant of a type opposite said first dopant so as to form said second side of said active pn junction such that said cleaned surface of said substrate is coincident with said metallurgical junction of said active pn junction.