Patent ID: 9349906
Filing Date: 2016-05-24
CPC Classification: C23C,H01L,Y02E,Y02P

Claim Text:
1. A method for forming a chalcogenide semiconductor material, the method comprising the steps of: providing at least one sulfur source and at least one selenium source; heating the at least one sulfur source to form a sulfur-containing vapor; heating the at least one selenium source to form a selenium-containing vapor; passing a carrier gas first through the sulfur-containing vapor and then through the selenium-containing vapor, wherein the sulfur-containing vapor and the selenium-containing vapor are transported via the carrier gas to a sample containing at least one precursor component of the chalcogenide semiconductor material; and contacting the sulfur-containing vapor and the selenium-containing vapor with the sample under conditions sufficient to form the chalcogenide semiconductor material, further comprising the steps of: providing an apparatus having a sequence of chambers connected in series such that an outlet of one of the chambers is connected to an inlet of an adjacent one of the chambers in the sequence; placing the at least one sulfur source in a first chamber in the sequence and the at least one selenium source in a second chamber in the sequence; heating the at least one sulfur source to form a sulfur-containing vapor in the first chamber; heating the at least one selenium source to form a selenium-containing vapor in the second chamber; passing the carrier gas through the sequence of chambers beginning with the first chamber, wherein the first chamber is located before the second chamber in the sequence of chambers such that the carrier gas passes first through the sulfur-containing vapor in the first chamber and then through the selenium-containing vapor in the second chamber and transports the sulfur-containing vapor and selenium-containing vapor through the sequence of chambers to the sample.