Abstract:A review is given of the factors governing the conversion efficiency for crystalline silicon solar cells at AM1 and of the practical limits on cell efficiencies. Included are losses due to reflection, shadowing, carrier diffusion length, and I2R dissipation. The influence of polycrystalline grain size on conversion efficiency is also discussed. For conventional cells having a planar junction, a practical limiting efficiency in production appears to be about 17% in the absence of sunlight concentration.* Electr… Show more
“…Les deux variations, celle de PM et celle de V co sont liées, les conditions permettant d'atteindre de grandes valeurs de P mm imposent de grandes valeurs de Vco : les paramètres importants deviennent alors n,lOI liés à Vco par l'équation (4 Vco.…”
“…Les deux variations, celle de PM et celle de V co sont liées, les conditions permettant d'atteindre de grandes valeurs de P mm imposent de grandes valeurs de Vco : les paramètres importants deviennent alors n,lOI liés à Vco par l'équation (4 Vco.…”
“…Figure 5 shows a plot of short-circuit current as a function of diffusion length, obtained on wafers prior to solar cell processing by the measurement of capacitively coupled, charge carrier lifetime (20). The solid curve is calculated for 450 t~m thick solar cells according to the methodology of Amick and Ghosh (21). The experimental points appear well fitted by a curve representing a 20% loss for reflection and shadowing.…”
Section: Solar Cell Performance As a Function Of Diffusion Lengthmentioning
Single-crystal silicon solar cells having efficiencies within 1% of those prepared in semiconductor-grade silicon have been fabricated in twice-recrystallized, high purity metallurgical silicon.
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