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High-efficiency, 0.79 M2 tandem a-Si modules fabricated by a batch process

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4 Author(s)
Pingate, N. ; Nat. Sci. & Technol. Dev. Agency, Pathumthani, Thailand ; Sriprapa, K. ; Sichanugrist, P. ; Chetsiri, N.

In this work, we've successfully developed the high efficiency, 0.79 m2 a-Si/a-Si tandem modules with average stable power of 50 watts by a EPV's production line at Bangkok Solar Co., Ltd. in Thailand. Films are deposited on 48 pieces of glasses at a time. This can be achieved for the first time by using 1) microcrystalline n-layer for better interface contact and lower absorption. 2) ZnO/AI back electrode deposited at room temperature. 3) High quality p/i interface layer. Furthermore, we could also successfully reduce the cell fabrication time about 40% by introducing the treatment after p-layer deposition for lower boron cross contamination at the p/i interface.

Published in:

Photovoltaic Specialists Conference, 2005. Conference Record of the Thirty-first IEEE

Date of Conference:

3-7 Jan. 2005