Bismuth-Catalyzed and Doped Silicon Nanowires for One-Pump-Down Fabrication of Radial Junction Solar Cells

Linwei Yu 1 Franck Fortuna 2 Benedict O'Donnell 1 Taewoo Jeon Martin Foldyna 1 Gennaro Picardi Pere Roca I Cabarrocas 1
1 LPICM - Laboratoire de physique des interfaces et des couches minces [Palaiseau]
2 CSNSM PS2
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
Abstract : Silicon nanowires (SiNWs) are becoming a popular choice to develop a new generation of radial junction solar cells. We here explore a bismuth- (Bi-) catalyzed growth and doping of SiNWs, via vapor-liquid-solid (VLS) mode, to fabricate amorphous Si radial n-i-p junction solar cells in a one-pump-down and low-temperature process in a single chamber plasma deposition system. We provide the first evidence that catalyst doping in the SiNW cores, caused by incorporating Bi catalyst atoms as n-type dopant, can be utilized to fabricate radial junction solar cells, with a record open circuit voltage of V-oc = 0.76 V and an enhanced light trapping effect that boosts the short circuit current to J(sc) = 11.23 mA/cm(2). More importantly, this bi-catalyzed SiNW growth and doping strategy exempts the use of extremely toxic phosphine gas, leading to significant procedure simplification and cost reduction for building radial junction thin film solar cells.
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Journal articles
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https://hal-polytechnique.archives-ouvertes.fr/hal-00757353
Contributor : Martin Foldyna <>
Submitted on : Monday, November 26, 2012 - 4:48:08 PM
Last modification on : Wednesday, March 27, 2019 - 4:20:04 PM

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Linwei Yu, Franck Fortuna, Benedict O'Donnell, Taewoo Jeon, Martin Foldyna, et al.. Bismuth-Catalyzed and Doped Silicon Nanowires for One-Pump-Down Fabrication of Radial Junction Solar Cells. Nano Letters, American Chemical Society, 2012, 12, pp.4153-4158. ⟨10.1021/NL3017187⟩. ⟨hal-00757353⟩

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