Abstract
For the first time, solar cells of laminated grid cell (LGCell) design are fabricated on multicrystalline nontextured silicon (mc-Si). An efficiency of 15.9% is achieved. The effect of (n + pp +)-mc-Si structure treatment by atomic hydrogen generated by a hot filament and microwave plasma is studied. Hydrogenation improves the parameters describing the dependence of the open-circuit voltage on the radiation intensity and the long-wavelength (λ = 1000 nm) sensitivity of the solar cell by 10–20%, which indicates that defects in mc-Si are passivated. Hydrogenation of the emitter side results in an increase in the series resistance of the solar cell, a decrease in the short-wavelength (λ = 400 nm) sensitivity by 30–35%, and the appearance of an oxygen peak in the energy-dispersive spectra (EDS). These effects are eliminated by fine etching of the emitter.
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Original Russian Text © G.G. Untila, T.N. Kost, A.B. Chebotareva, M.E. Belousov, V.A. Samorodov, A.Yu. Poroykov, M.A. Timofeyev, M.B. Zaks, A.M. Sitnikov, O.I. Solodukha, 2011, published in Fizika i Tekhnika Poluprovodnikov, 2011, Vol. 45, No. 3, pp. 379–386.
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Untila, G.G., Kost, T.N., Chebotareva, A.B. et al. Laminated grid solar cells (LGCells) on multicrystalline silicon. Application of atomic hydrogen treatment. Semiconductors 45, 369–375 (2011). https://doi.org/10.1134/S1063782611030213
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DOI: https://doi.org/10.1134/S1063782611030213