Patent ID: 9496426
Filing Date: 2016-11-15
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A method comprising: determining, based on a desired electrical characteristic of an alloyed thin film buffer layer, an amount of an additive oxide precursor; injecting a host oxide precursor and the amount of the additive oxide precursor into a deposition chamber that contains a substrate coated with a transparent conductive oxide (TCO) layer; and forming the alloyed thin film buffer layer on the TCO layer by reacting the host oxide precursor to form a host oxide and reacting the additive oxide precursor to form an additive oxide, wherein the additive oxide has a bandgap higher than approximately 3.5 eV, and wherein a molar ratio of additive oxide to host oxide in the alloyed thin film buffer layer is between about 0.2 and about 0.7.