S. Bourdais et al., Comparative study of rapid and classical thermal phosphorus diffusion on polycrystalline silicon thin films, SOL EN MAT, 65(1-4), 2001, pp. 487-493
In this paper, the emitter formation on polycrystalline silicon (with grain
size of 0.5-10 mum) deposited by chemical vapour deposition (CVD) on forei
gn substrates (thermal SiO2 and mullite ceramic) is studied. Phosphorus dop
ing efficiency by POCl3 diffusion, APCVD + drive-in diffusion, and also rap
id-thermal diffusion (RTD) from spin-on doping (SOD) sources were compared.
For the first time, we report on photovoltaic results obtained on RTD-diff
used emitters on pc-Si active layers deposited by rapid-thermal CVD, thus o
pening the way to an all rapid-thermal process for solar cell fabrication.
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