November 07, 2005 - Denver, CO, USA:

Dr. Baosheng Sang of Energy Photovolotaics, Inc. (EPV), presented a paper entitled “Simplified Hybrid Process: Application to Normal, Sub-micron, and Light-trapping CIGS Devices” at the DOE Solar Energy Technologies Program Review Meeting, Denver, on November 7, 2005. Three main results were described: (1) development and optimization of EPV's proprietary simplified hybrid process for CIGS deposition involving both sputtering and evaporation; (2) development of sub-micron (“thin”) CIGS devices and modules; and (3) use of titanium nitride as back reflector layer. These achievements increase CIGS throughput, reduce indium consumption, and are paving the way to ultra-thin, light-trapping  CIGS devices and modules. Furthermore, a 14.1% efficient CIGS cell was achieved at a thickness of 1.3 microns, illustrating that the simplified hybrid process does not compromise cell efficiency. Dr. Sang also participated in the Peer Review of the DOE Solar Program on November 9.