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Title: Spectroscopic Investigations of Borosilicate Glass and its Application as a Dopant Source for Shallow Junctions
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Keywords: Electronic & Electrical Engineering
Electronic & Electrical Engineering
Issue Date: 2000
Publisher: Electrochemical Society
Citation: M. Nolan, T.S. Perova, R.A. Moore, C.E. Beitia, J.F. McGilp and H.S. Gamble, Spectroscopic Investigations of Borosilicate Glass and its Application as a Dopant Source for Shallow Junctions, Journal of the Electrochemical Society, 147, 8, 2000, 3100, 3105
Series/Report no.: Journal of the Electrochemical Society
Abstract: Borosilicate glass was investigated as a dopant source for proximity rapid thermal diffusion. A borosilicate gel was spun onto a silicon wafer and the layer was rapid thermally processed to convert it to a borosilicate glass. Fourier transform infrared spectroscopy, spectroscopic ellipsometry, and sheet resistance measurements were used to understand and subsequently optimise the conversion of the gel to a borosilicate glass. The optimum conversion step, which avoided any boron loss from the borosilicate glass layer, was a curing step of 900°C for 45 s. Secondary ion mass spectrometry was used to measure the boron dopant profile of a silicon wafer that was doped with the borosilicate glass layer. The wafer had a surface dopant concentration of 4.7 × 1019 cm–3 and a junction depth of 65.5 nm. Junction diodes, which were fabricated using the glass layer as a dopant source, displayed excellent characteristics, with very low leakage currents and a near ideal forward slope
Description: PUBLISHED
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Appears in Collections:Electronic & Electrical Eng (Scholarly Publications)

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