Patent ID: 9385260
Filing Date: 2016-07-05
CPC Classification: C23C,H01L,Y02E,Y02P

Claim Text:
1. A method for forming thin film solar cell materials, said method comprising, in order: introducing a first inert gas mixture that includes hydrogen selenide into a single chamber at a first pressure value until the single chamber reaches a second pressure value and at a first temperature value; increasing the temperature in the single chamber to a second temperature value so that the pressure in the chamber increases to a third pressure value; performing a selenization process in the single chamber at the second temperature and third pressure; adding a second inert gas mixture that includes hydrogen sulfide into the same single chamber until the single chamber reaches a fourth pressure value; increasing the temperature in the single chamber to a third temperature value; and performing a sulfurization process at the fourth pressure and third temperature in the same single chamber.