Patent ID: 6300558
Filing Date: 2001-10-09
Classification: H01L,Y02E,Y02P

Abstract:
A solar cell comprising:a germanium substrate;a buffer layer formed on the germanium substrate;a first In.sub.x Ga.sub.1-x As layer of first conductivity type formed on the buffer layer, wherein a composition of Indium particular to the first In.sub.x Ga.sub.1-x As layer lies in a range between 0.005 and 0.015; anda second In.sub.x Ga.sub.1-x As layer of a second conductivity type formed on the first In.sub.x Ga.sub.1-x As layer to form a first pn junction with the first In.sub.x Ga.sub.1-x As layer, and the second In.sub.x Ga.sub.1-x As layer has a composition of Indium particular to the second In.sub.x Ga.sub.1-x As layer.