Laminated Grid Solar Cells (LGCells) on Multicrystalline Silicon. Application of Atomic Hydrogen Treatmentстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация: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 opencircuit 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 shortwavelength (λ = 400 nm) sensitivity by 30–35%, and the appearance of an oxygen peak in the energydispersive spectra (EDS). These effects are eliminated by fine etching of the emitter.