High-efficiency cell structures and processes applied to photovoltaic-grade Czochralski silicon

J.M. Gee, R.R. King, K.W. Mitchell
1996 Conference Record of the Twenty Fifth IEEE Photovoltaic Specialists Conference - 1996  
We performed a detailed study to examine the limiting performauce available using "photovoltaiograde" Cz silicon. Photovoltaic-grade silicon refers to silicon produced by the photovoltaic ind-, which may differ from the silicon used in the SemicDnduCtof device industry in impurity d defect Concentrations. The study included optimization of fjlbrcation p~, development of advanced device structuns, and detaded model calculations to project hture performance improvements. Process and device
more » ... s and device optimization resulted in demonstration of 75-p bulk lifetimes and 17.6%-eficient largearea cells using photovoltaic-grade Cz silicon. Detailed calculations based on the material and device evaluation of the present work project efficiencies of 20% for photovoltaic-grade Cz silicon with properly optimized processing and device structures.
doi:10.1109/pvsc.1996.564030 fatcat:2sfyc73mgzb3pd3zyi4r4vuyzu