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Cell and defect behavior in lithium-counterdoped solar cells

Technical Report ·
OSTI ID:6032242
Some n(+)/p cells in which lithium is introduced as a counterdopant, by ion-implantation, into the cell's boron-doped p-region were studied. To determine if the cells radiation resistance could be significantly improved by lithium counterdoping. Defect behavior was related to cell performance using deep level transient spectroscopy. Results indicate a significantly increased radiation resistance for the lithium counterdoped cells when compared to the boron doped 1 ohm-cm control cell. The increased radiation resistance of the lithium counterdoped cells is due to the complexing of lithium with divacancies and boron. It is speculated that complexing with oxygen and single vacancies also contributes to the increased radiation resistance. Counterdoping silicon with lithium results in a different set of defects.
Research Organization:
National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
OSTI ID:
6032242
Report Number(s):
N-84-29322
Country of Publication:
United States
Language:
English