A novel 3D photovoltaic (PV) cell architecture was developed by Ready in 2004. The technology utilizes an additive topography to allow for light-trapping (texturing) of thin film photovoltaics. The subsequent patent (US 8,350,146) has been licensed to Bloo Solar for commercial production. The architecture is amenable to texturing many different thin-film photoabsorbers: CdTe, a-Si, CIGS, CZTS, etc. It is particularly useful for space-based applications, due to the light trapping morphology that eliminates the need for bulky, complex and failure-prone solar tracking arrays on spacecraft. To demonstrate the utility of this technology in space, several examples of these carbon nanotube-based 3D PV cells will be placed on the exterior of the International Space Station. Currently, launch is planned for July 18 (12:45A EDT) with deployment to the exterior of the station scheduled for August 2016.
