WEBBED DENDRITIC SILICON SOLAR CELL RADIATION EFFECTS INVESTIGATION.
Final technical rept., 1 Jan 63-1 Jan 64,
AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO
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An investigation was conducted to determine the optimum structure for silicon solar cells, with regard to resistance to damage by 2 MeV electrons. The parameters considered were cell type, i.e. PN or NP, junction depth, and base resistivity. Of all the parameters affecting cell radiation resistance, the initial efficiency was found to have the largest effect. A comparison was made to assess the superiorty of the optimum NP structure, for 2 MeV electron flux densities in the range 10 to the 13th 10 to the 15th power electrossq cm. The degradation rate per decade of flux for the PN structure was about 25 vs 21 for the NP cells. Author