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| Thin Film Technology |
 Thin
film operates on the principle that photovoltaic modules
should be just that – thin. At 1.3 µm thick – less than 1%
that of conventional crystalline silicon at 150-200 µm
thick – thin film has shown a remarkable ability to
approach, and in some cases even exceed the performance of
crystalline silicon at a significantly lower cost.
There are three main viable high-efficiency thin film
technologies: CdTe, CIGS, and a-Si / µc-Si. a-Si / µc-Si,
the technology used by Sun Solar USA, has the dual
advantage of using environmentally safe and abundant
silicon, and being able to take advantage of the
tremendous silicon-based manufacturing infrastructure in
the semiconductor industry. The end result is that the
customer receives the best-quality product, manufactured
through time-tested methods, for the lowest price.
a-Si / µc-Si is divided into two layers, an amorphous
silicon (a-Si) layer, and a microcrystalline silicon
(µc-Si) layer. The a-Si layer absorbs a certain portion of
the electromagnetic spectrum in sunlight. What it does not
absorb passes through and is absorbed by the µc-Si layer.
In this way, the dual-layer configuration, termed
“tandem-junction”, is able to absorb 50%+ more than a
single-junction product with no stability issues.
Sun Solar USA’s proprietary expertise and half a century
of collective experience in thin film process technology,
combined with its equipment partnership with leading thin
film equipment manufacturer Oerlikon, makes it the leading
manufacturer and innovation center for a-Si / µc-Si thin
film in the world. |
| Thin Film PV |
 Sun
Solar USA, through its high-efficiency amorphous
silicon / microcrystalline tandem junction thin film
photovoltaic technology, will be among the first
photovoltaic producers in the world to reduce module
cost to below US$1 / Wp.
Sun Solar USA’s a-Si / μc-Si thin film is currently
the world’s leading technology. The thin film does
not present any environment problems, is less than
1.8 μm thick (<1% of crystalline silicon), and has
achieved >9% conversion efficiency. The technology
and cost advances over traditional energy sources
will greatly accelerate the development of new
photovoltaic applications.
Building-integrated photovoltaics (BIPV) are one of
the most exciting new applications for Sun Solar
USA’s high-efficiency thin film:
Natural sunlight will be directly converted
into electricity, reducing indoor temperatures, and
reducing energy consumption for air conditioning.
No additional land is needed; building walls and
roofs will provide sufficient space.
Thin film modules can be directly integrated into
building materials, saving installation costs.
Thin film’s unique and attractive look adds
aesthetically pleasing visual effects to any
building
High
Efficiency Thin Film PV
Specifications
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