One of the key challenges facing the concentrating photovoltaic (CPV) industry, and especially one of the biggest providers – Solar Systems (see Translucent’s organisational structure), is the cost of the high efficiency (typically 40%) photovoltaic cells. As these cells are grown on expensive Ge substrates, the industry is driving for new innovation to bring the cost down. One area that is gaining in interest today is to epitaxially grow high performance multi-junction solar cells (sometimes referred to as TJs or triple junctions) onto virtual germanium templates which are in turn grown onto low cost large silicon wafers. Translucent’s cSOI™ technology platform extends to Ge-on-Si and is scalable to 200mm. Translucent is ready to supply device-ready template wafers to the multi-junction solar cell industry. In summary, Germanium-on-silicon provides a lower cost route to manufacturing multiple junction solar cells for concentrator photovoltaic (CPV) applications.