High-efficiency silicon concentrator solar cell research
Abstract
This project continued the development of high efficiency silicon concentrator solar cells with the goal of achieving a 24% efficient module ready cell. This target was comfortably achieved with efficiencies as high as 25.2% at 125 suns concentration measured at Sandia National Laboratories. In outdoor testing at Sandia, cells of this type but of more modest performance resulted in lens/cell efficiency above 20% for the first time. Exciting results were obtained with a new cell structure, the PERC cell (passivated emitter and rear cell) which demonstrated an efficiency of 21.8% for a nonconcentrating cell and creditable performance out to 20 suns for concentrator cells. Progress was also reported for cells fabricated on n-type substrates and for plasma grooved, buried contact solar cells.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1989
- Bibcode:
- 1989STIN...9020490G
- Keywords:
-
- Energy Conversion Efficiency;
- Reflectance;
- Solar Cells;
- Solar Energy Conversion;
- Current Density;
- Fabrication;
- Feasibility Analysis;
- Passivity;
- Energy Production and Conversion