System and method for recycling a gas used to deposit a semiconductor layer

摘要

A system for recycling includes a processing chamber, a reclamation reservoir and a mixing reservoir. The processing chamber is configured to receive a deposition gas deposited onto a semiconductor layer. The processing chamber has an exhaust to discharge an unused portion of the deposition gas as an effluent gas. The reclamation reservoir is in fluid communication with the processing chamber. The reclamation reservoir is configured to receive and store the effluent gas from the processing chamber. The mixing reservoir is in fluid communication with the reclamation reservoir and the processing chamber. The mixing reservoir is configured to mix the effluent gas with a virgin gas to form a recycled deposition gas. The mixing reservoir supplies the recycled deposition gas to the processing chamber to deposit an additional portion of the semiconductor layer.