Laser scribing tools edge in front
Laser scribing tools edge in front—continued from page 12
making laser scribing for edge isolation the 2008, pp 26-27.
standard approach. Consequently, this will 9. E. Schneiderlöchner, at Conference Dr. Finlay Colville is director of solar
provide strong market growth for suppliers on PhAST, San Jose, 2008. marketing at Coherent, Inc. He holds
of laser-based tools. Increased competition 10. J. Rentsch et al, in Conference Record
a BSc. in physics from University of
will accelerate laser tooling performance, of the 31st IEEE PVSC, pp 931-934,
Glasgow and a Ph.D in laser physics
with enhanced features aligned with pro- 2005, & References therein.
from University of St. Andrews. Since
duction lines of tomorrow. 11. A. Grohe et al, at 22nd European
joining Coherent in 1999, he has held
PVSEC, Milan, 2007.
a range of sales and marketing positions
references 12. M. Acciarri et al, at 23rd European
worldwide, concentrating on laser ap-
1. R. Preu at al., at 20th European PVSEC, Valencia, 2008.
plications within the solar industry for
PVSEC, Barcelona, 2005. 13. A. Schoonerderbeek et al, in Proceed-
the past two years. Dr. Colville can be
2. G. Rull, Yole Développment, Private ings of 69th Laser Materials Processing
reached at finlay.colville@coherent.com
communication, February 2009. Conference, pp. 85-90, 2007 & Refer-
or +44 7802 238 775.
3. I. Melnyk et al, at 20th European ences therein.
PVSEC, Barcelona, 2005. 14. M. Acciarri, at Mini-PV Conference,
4. O. Papathanasiou & S. Chunduri, Trondheim, 2008.
in Etching equipment surveys within 15. D. Kray et al, Solar Energy Materials
Photon International, December 2007 & Solar Cells 91, pp 1638-1644, 2007.
& December 2008. 16. R. Grishke et al, in Proceedings of the
5. A. Hauser et al, at 17th European International Congress of ICALEO,
PVSEC, Munich, 2001. pp. 123-132, 2007.
6. E. Schneiderlöchner et al, at 3rd 17. G. Emanuel et al, at 17th European
World Conf. on PV Energy Conver- PVSEC, Munich, 2001.
sion, Osaka, 2003. 18. M. Osborne, Photovoltaics Interna-
7. S. Correia et al, at 21st European tional PV Event Supplement, pp. 7-10,
PVSEC, Dresden, 2006. June / July 2008.
8. S. Roth, in Solar Industry, December
New Products—continued
solar hot water heater and solar panel supplies for servers and telecom systems, leading solar cell startup and operating
systems to increase heat retention and ef- which are operational round the clock, will performance and efficiency at levels as low
ficiency of the units. www.nansulate.com also benefit from the cumulative savings as 0.32 volts, as well as operation down to
of this apparently small improvement in 0.25 V. Most ICs cannot start up at volt-
acT solar technology gives immedi- efficiency. www.st.com ages less than the typical turn-on voltage of
ate boost of 6-11% power to solar a transistor (approximately 0.7 V) without
pV systems 3rd generation silicon carbide
external assistance. This limitation reduces
Act Solar’s new product, Powerstring™ for diodes to drop cost of solar con-
system design options and increases the
solar PV systems, cumulatively delivers an verters
complexity of power conversion and energy
additional 40-80% total power over 25-40 Infineon Technologies AG introduced its
recovery applications involving ultra-low
years of operations. Extensive field testing third generation thinQ!™ SiC Schottky
voltages. Freescale’s power conversion
has proven that PV systems using Power- diodes. Featuring the industry’s lowest
technology enables IC startup thresholds
String™ initially yield 6-11% more power, device capacitance for any given current
to be reduced to 0.32 V and efficiencies of
and are projected to cumulatively deliver rating, which enhances overall system
nearly 90 percent, enabling practical and
40–80% more total power over 25–40 efficiency at higher switching frequencies
cost-effective ways to develop a wide range
years of operations. www.actsolar.com and under light load conditions, the new
of single-cell solar power systems and other
thinQ! diodes help reduce overall power
energy-harvesting applications.
sTMicroelectronics develops tech- converter system costs. Additionally, with
www.freescale.com
nology for instant efficiency boost its third generation, Infineon provides the
for solar power
industry’s broadest SiC Schottky diode
Ordinary silicon diodes used in switched-
portfolio which not only includes the
mode power supplies lose up to 1%
TO-220 package (2-pin version) but also
efficiency by not turning off immediately,
the DPAK package for high power density
but STMicroelectronics is among the first
surface mount designs www.infineon.com/sic
companies to introduce silicon carbide
(SiC) diodes that save this energy normally Freescale unveils breakthrough in
lost during switching. The STPSC806D power conversion technology for
and STPSC1006D SiC Schottky diodes solar applications
are especially useful in converters for solar Freescale Semiconductor has developed
power systems, where every fractional an advanced, ultra-low-voltage DC-to-DC
efficiency percentage is valuable. Power converter technology that enables industry-
www.globalsolartechnology.com Global Solar Technology – March/April 2009 – 29
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