This article is cited in 1 paper

Semiconductor physics

Laminated grid solar cells (LGCells) on multicrystalline silicon. Application of atomic hydrogen treatment

G. G. Untila^a, T. N. Kost^a, A. B. Chebotareva^a, M. E. Belousov^a, V. A. Samorodov^a, A. Yu. Poroĭkov^a, M. A. Timofeev^a, M. B. Zaks^b, A. M. Sitnikov^b, O. I. Solodukha<sup>b

a</sup> Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
^b Quark Scientific Production Company, Krasnodar, 350000, Russia

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 ($\lambda$ = 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 ($\lambda$ = 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.

Received: 08.06.2010
Accepted: 22.06.2010

 English version: Semiconductors, 2011, 45:3, 369–375

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