PP1 Silicon Cells

Silicon solar cells constitute about 90% of the worldwide solar electricity market (photovoltaic + thermal). This share is unlikely to change much over the next five years. In 2015, new silicon PV and wind electricity generation capacity was installed at a greater rate than the sum of new fossil and nuclear generation capacity combined. Reasons for silicon’s dominance include silicon abundance, moderate cost, low toxicity, high and stable cell efficiency, robustness, bankability, highly advanced and widespread knowledge of silicon, and extensive and sophisticated supply chains.

This Program Package (PP1) addresses silicon wafer-based cells and modules and has efficiency targets, increasing over the eight-year period, for cells formed from solar-grade silicon, all-rear contact cells and tandem structures that include silicon.

 

 

PP1 Silicon Cells

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Chief Investigators: Allen Barnett
Overview: This strategy of PP1.3a is to take advantage of the miscibility between Si and Ge to grow a series of SixGe1-x buffer layers on Si, with x steadily decreasing. In this way, the lattice constant can
Chief Investigators: Stephen Bremner, Anita Ho-Baillie
Overview: This approach exploits a number of advantages of using gallium phosphide (GaP) as a bridging layer from the silicon substrate to high potential efficiency III-V materials. Foremost is the demonstra
Chief Investigators: Xiaojing Hao
Overview: This project aims to build low-cost high-efficiency Si/III-V tandem cells by using the sputtered heteroepitaxial Ge/Si.
Chief Investigators: Anita Ho-Baillie
Overview: The design concept in this approach is to investigate material systems where epitaxial growth on a crystalline template is not required for good cell performance.