VENDORVIEW
DEK Solar PV3000 launched
At DEK, we
We were at the forefront of solar cell manufacture
in the late 1970s, delivering systems to customers
have delivered in India, Taiwan and China. Our thick film expertise
leading-edge
was later transferred to DEK Japan, where
development and process refinement continued.
Issue V 2009
screen printing
solutions for
In 2007, we officially launched DEK Solar, drawing
on our established expertise in the field to offer the
advanced
industry a truly unique proposition. This
technology
development saw the dawn of a new range of
applications for
advanced PV cell manufacturing solutions to
accommodate the demanding needs of the
-pv-management.com
over 40 years.
industry going forward. Based on our multi-award-
Our history
winning SMT platform philosophy, the birth of the
.solar
PV1200 photovoltaic metallization line introduced
www
spans solar cell
the industry to proven print accuracy, dramatically
metallization,
faster processing speeds, a much smaller footprint, PV3000 deploys patented multiple print heads
20
intrinsic modularity, lead times of weeks rather than operating in parallel; if one head halts, the others
thick-film
months and comprehensive global support. Most continue to print, virtually eliminating downtime,
hybrids,
recently, the PVP1200 screen printing platform at and features dedicated handling for thin wafers to
the heart of the PV1200 line has won the PV ensure low breakage rates, as well as high speed
high-volume
Process Equipment Award Category from Solar-PV machine vision. With print speeds up to
surface-mount
Management Magazine. 600mm/sec, the PV3000 guarantees exceptional
output while handling minimises breakages.
assembly,
Today, we consistently deliver advances in this
wafer-level
sector, evidenced by the launch of our PV3000 PoP enabled by the PV3000 is finding application
metallization solution to be unveiled at EUPVSEC. throughout the photovoltaic metallization process.
semiconductor The PV3000 is a solution for an industry focused For example, PoP capability also comes into its
packaging, and
on reaching grid parity. As the enabler of advanced own in the Selective Etching cell structuring
processes such as print-on-print (PoP), the technique whereby an etchant is screen printed
many more PV3000’s accuracy enables PV manufacturers to onto the cell’s surface in a grid pattern identical to
applications
increase the conductor’s cross-sectional area to that of the conductor grid. Upon heat activation,
enhance current carrying capacity without the etchant removes the cell’s top layer and
requiring shadowing more of the silicon substrate. exposes the silicon underneath, so that in the next
precision
print pass, the silver grid enters into direct contact
While PoP delivers a solution to PV manufacturers’ with the cell’s active energy-transforming layer.
deposition of efficiency dilemma, it will only be successful if print
advanced
platform technology delivers nothing less than The Selective Emitter process aims to increase
repeatable accuracy, a fundamental enabler for this efficiencies by printing extra n-type dopant in a
materials.
process. When printing one pattern, it probably will pattern mirroring that of the collection grid. The
not matter if it is out by a few microns. But, if after fact that the two patterns must be aligned to one
metallization, you put the same cell through again other to within 10-12µm is complicated by the fact
and want to print on top to build conductor height, that the dopant is invisible. This precludes most
you must be both accurate and repeatable. vision systems, so two small fiducials, to which the
Delivering six-sigma repeatability for capability in two deposition processes must be precisely
advance of current solar cell requirements, the aligned, are typically etched on the edge of the
PV3000’s inherent accuracy and repeatability is cell. The PV3000’s repeatable accuracy can help
ideal for demanding techniques such as print-on- the path to grid parity and with one eye fixed firmly
print (PoP). Indeed, with these processes fast- on the future, the team at DEK Solar is committed
becoming industry standard, the PV3000 achieves to shortening that path for customers around the
PoP capability to +/- 12.5 microns at 2 Cpk. The world. Find out more at www.deksolar.com.
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