Patent ID: 7915072
Filing Date: 2011-03-29
Classification: H01L,Y02E,Y02P

Abstract:
1. A non-vacuum coating method for forming a copper/indium/gallium/selenium (CIGS) layer on a molybdenum layer deposited on a glass substrate in a non-vacuum environment under an atmospheric pressure, wherein the glass substrate together with the Mo layer deposited thereon is driven to move by a conveyor device, the non-vacuum coating method comprising: utilizing an ultrasonic vibrating mixer to mix a CIGS mixture with a mixing fluid to obtain a uniform CIGS coating material; distributing the CIGS coating material via a delivering pipeline to a plurality of ultrasonic nozzles, wherein the ultrasonic nozzles are positioned over the Mo layer; applying an ultrasonic vibration for spraying the CIGS coating material onto the Mo layer, and forming a CIGS coating material layer; and utilizing a plurality of infrared ray (IR) heating lamps for generating an IR radiation to conduct a drying process to the formed CIGS layer for removing residue of the mixing fluid remained in the CIGS coating material layer, thus obtaining the CIGS layer, wherein the CIGS layer is adapted for serving as a light absorbing layer of a solar cell.