New Products
New Products
New products
New metallization pastes from
heraeus increases the efficiency of
crystalline solar cells
Recently it became possible to significantly
increase the efficiency factor of crystalline
solar cells by the use of so-called metal wrap
through (MWT) cells. The photovoltaic
group of the Thick Film Division of WC
Heraeus has specially developed new silver
metallization pastes for this innovative
type of cell. Scientists from the Fraunhofer
Institute for Solar Energy Systems (ISE) in
Freiburg have successfully demonstrated
that the MWT cells allow for an increase in
efficiency of up to 0.5 % (absolute).
The efficiency factor was increased by
using newly developed metallization pastes
made by Heraeus. The state-of-the art range
of pastes, known as SOL 21X, account for
a modified, optimal cell design and make
it possible to enlarge the total active cell
surface by 3% in comparison to standard
cells. MWT cells can be produced on
already existing production lines with few
relevant changes being necessary. The new
metallization pastes have led to a further
important milestone being achieved on the
path towards higher levels of power output.
Another advantage of the MWT
design is the simplified circuitry of the
cells within the module now only to be
found on the back side. Several leading
cells per hour, and for dual lane users the and CMOS image sensor applications, the
cell manufacturers have already expressed
throughput will jump from approx. 2,200 Charger system’s new linear architecture
enthusiastic interest in the newly developed
cph to 2,700 cph. For a lot of customers more than doubles the wafer output of
pastes. Dr. Weiming Zhang, worldwide
operating multiple ASYS lines, this will competing systems to deliver the highest
manager of photovoltaic technology at
have another huge advantage: upgrading productivity available. In addition,
W. C. Heraeus explains: “Working in
multiple lines might allow them to proprietary Isani™ wafer treatment
closest co-operation with our customers,
postpone or cancel the investment for a technology allows the Charger UBM
Heraeus develops tailor-made products and
new metallization line, which translates to system to process ten times more wafers
intelligent solutions that create value for
big cost savings per watt due to reduced between servicing to enable best-of-breed
the photovoltaic industry. We are extremely
operator count, capital invest, floorspace uptime performance and the lowest
proud of the performance of our new SOL
and utilities thus making them more available per-wafer cost.
21X range of metallization pastes. At the
competitive in the market. The upgrade “Packaging facilities need a fast,
same time we continue to develop new
kits are available immediately for most dependable metallization workhorse to
technology to make our customers more
existing ASYS lines. www.asys-group.com maximize wafer output and minimize
competitive.” www.wc-heraeus.com
the system redundancy burden imposed
applied Materials redefines chip by slower, less reliable alternatives,” said
aSyS promises 22% more through-
packaging productivity with new
Steve Ghanayem, vice president and
put on existing metallization lines
charger pVD system
general manager of Applied Materials’
ASYS announces the availability of a high
Applied Materials, Inc. introduced its
Metal Deposition and Front End Products
speed upgrade kit that allows existing users
Applied Charger™ UBM PVD system that
Business Unit. “By blending our proven
of ASYS metallization lines to increase
defines a new standard in metal deposition
PVD* process technology with packaging-
throughput by up to 22%. The upgrade
productivity and reliability for chip
specific innovations, we’ve created a highly
kit, consisting of hardward and software
packaging.
productive, cost-efficient solution that is
changes, can be installed in just 3 days.
Specifically designed for under-bump
already churning out wafers in high volume
Single lane users will see their capacity
metallization (UBM), redistribution layer
production at multiple customers around
increase from approx. 1,200 cph to 1,440
28 – Global Solar Technology – July/August 2009
www.globalsolartechnology.com
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