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Proceedings Paper

Fabrication and properties of mechanically grooved silicon solar cells with buried contact Cu electrode
Author(s): Pyungwoo Jang; Chi-Sup Jung; Kwang-Ho Kim; Seomoon Kyu
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Paper Abstract

Mechanically grooved silicon solar cells with buried contact copper electrode were attempted. In order to groove a simple mechanical grooving system was home-made, in which synchronous motors in hard disc driver (HDD), audio amplifier, signal generator were used. For the anti-reflection films sputtering condition for SiNx films was optimized. With increasing input power, pressure, index of refraction of the films increased so that a very low etching rate of 0.8 nm/min could be achieved with a condition of Ar and N2 flow rate of 5 SCCM, input power of 300 W and sputtering pressure of 1 × 10-2 torr. Annealing condition for the formation of nickel silicie from electroless plated Ni-P layer was optimized as well as plating condition of copper electrode. However, the conversion efficiency of the BCSC in this study is 3.6% which is unexpectedly small. It seems that the reason for the low efficiency is due to short circuit forming in the lancet of the pyramid.

Paper Details

Date Published: 13 September 2011
PDF: 8 pages
Proc. SPIE 8110, Thin Film Solar Technology III, 81100W (13 September 2011); doi: 10.1117/12.894409
Show Author Affiliations
Pyungwoo Jang, Cheongju Univ. (Korea, Republic of)
Chi-Sup Jung, Cheongju Univ. (Korea, Republic of)
Kwang-Ho Kim, Cheongju Univ. (Korea, Republic of)
Seomoon Kyu, Cheongju Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8110:
Thin Film Solar Technology III
Louay A. Eldada, Editor(s)

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