TEMPERATURE, ILLUMINATION AND FLUENCE DEPENDENCE OF CURRENT AND VOLTAGE IN ELECTRON IRRADIATED SOLAR CELLS

摘要

Emperical equations have been dérived from measurements of solar cell photovoltaic characteristics relating light-generated current, IL, and open cir¬cuit voltage, Vo, to cell temperature, T, intensity of illumination, W, and 1 Mev electron fluence, φ. Both 2 ohm-cm and 10 ohm-cm cells were tested over the ranges:123°K≤T ≤473°K, 5 mW/cm2≤ W≤1830 mW/cm2 and 1 X 1013 e/cm2 ≤0≤ 1 X 1016 e/cm2.nThe temperature dependency of IL is similar for both resistivities at 140 mW/cm2;at high temperature (T ≥ 273°K) the temperature coefficient varies with fluence as φ0.18, while at low temperatures the coefficient is relatively in¬dependent of fluence. Fluence-dependent degration causes a decrease in IL at a rate proportional toφ0.153 for both resistivities. At all intensities other than 560 mW/cm2, a linear dependence of IL on illumination was found. Open cir¬cuit voltage equations were derived for all temperatures except 123°K and 173°K, where Schottky barrier effects and cell shunting led to questionable ex¬perimental results.