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Unlike wafer-based solar modules,
the thin-film solar cells can be manufactured directly on a glass
substrate as a large-scale solar power module. The substrate is bare
glass with a transparent conductive oxide (TCO) layer coated as the
front electrode of the module. After cleaning, the TCO pattern for
the separated front electrodes of individual cells is formed by using
a laser scriber according to the required output current and output
voltage. With the separated front electrode, the active layer of
the photovoltaic material is deposited by using the PECVD. In the
case of the tandem Si thin-film solar cells, the active layer includes
the amorphous silicon p-i-n layer and microcrystalline silicon p-i-n
layer, which is denoted by a-Si/μc-Si. After the second laser patterning
for the separated active layers of individual cells, the back contact
electrode is coated by using a sputter and then scribed for each
individual cell. The edge deposition is deleted and cleaned for subsequent
module encapsulation. Before the encapsulation, the characteristics
of the cells are tested by a solar simulator and organized in the
database. There are three important processes for module encapsulation,
including lay-up contacting for the conductive integration of the
junction box, the lamination with a piece of backsheet or back glass,
and the installation of the junction box. The process of a solar
cell module is finished by the final sealing or framing. The properties
of the complete module are assured by using a solar simulator as
the final station of the module assembly.| BeyondPV Co., Ltd
No. 60, Gongye 1st Rd., Annan District, Tainan City 70955, Taiwan TEL:886-6-3842888 / FAX:886-6-384-2890 All Right Reserved, Copyright © BeyondPV 2008. Design by 易透網 |
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