Abstract
The double sided buried contact (DSBC) silicon solar cells have consistently demonstrated output parameters superior to those of its single sided counterparts. This is because the high surface recombination velocity of the single sided cells was reduced to minimum by the rear floating junction in conjunction with high quality silicon dioxide. However, the somewhat lower fill factor ( FF) exhibited by single sided illumination of the structure can disappear if the bifacial testing equipment is used to properly characterize the cells. A 2D simulation has shown that a rear illumination of only 0.2 sun in conjunction with 1 sun front illumination, is quite adequate to bias the rear junction to a high voltage required to maintain good fill factor. This article discusses the fill factor of double sided buried contact silicon solar cells under single and double sided illumination.
Published Version
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