Products v2 4/2/10 11:35 Page 39
PRODUCTS
Amplifying power capacity
TREK, Inc.’s High Voltage Power Amplifier with an output current range of 0 to +/-
- Trek Model PZD350A - offers wide 200 mA (bipolar model); 0 to +700 V with
bandwidth and additional features +/-100 mA (unipolar model); 0 to -700 V
important in photovoltaic, piezoelectric, with +/-100 mA (unipolar model).
electro-optic, MEMS and other
applications. An alternative PZD350A “M/S” design
offers twice the current capability of the
The PZD350A provides a large signal standard PZD350A models.
bandwidth of 250 kHz (-3dB) and a small
signal bandwidth greater than 350 kHz (- Like all Trek amplifiers, the Model
3dB). This capability is especially PZD350A utilizes a four-quadrant, active
important when driving capacitive loads in output stage which sinks or sources
photovoltaic, piezoelectric driving/control, current into reactive or resistive loads
electro-optic, MEMS and other throughout the output voltage range. This
demanding applications such as laser is essential for achieving the accurate
modulation and ion beam control. output response and high slew rates
demanded by reactive loads.
The fully protected output of Model Trek designs and manufactures high-
PZD350A assures that the amplifier is Other technical parameters for the Model voltage power amplifiers and high-
safe-guarded from incidental short PZD350A include DC accuracy better performance electrostatic measurement
circuits, arcing or energy return from the than 0.1% of full scale and slew rate instrumentation. The company also
load device. greater than 500 V/us (+/-350 V range) or provides ESD sensors and monitors for
350 V/us (700 V range). The unit has ESD-sensitive environments, and charged
The PZD350A offers outstanding DC precision voltage and current monitors. It plate monitors for ionizer validation.
stability, high speed and precise control is CE marked. Please inquire about
of output voltages (DC or peak AC) in the custom options and/or OEM designs or TREK, INC
programmable ranges of 0 to +/-350 V whatever needs you may have.
www.trekinc.com
39
www
Beneq launches
.solar
first ever
-pv-management.com
industrial scale
ALD unit for rear-
side passivation
Issue I 2010
of c-Si cells
During Q4 of 2009, Beneq launched a requirement: high-quality passivation of scale ALD production unit for RSP: the
complete product concept for high the rear surface of the silicon cell. TFS 4X300. Besides enabling conformal
throughput rear side passivation (RSP) of and pinhole-free nanoscale coatings with
crystalline silicone (c-Si) based solar cells. Good RSP can improve the efficiency of suitable chemical precursors, the TFS
The concept includes both process know- multi- and mono-crystalline silicon solar 4X300 hosts a fully automated cassette
how and the coating equipment required, cells by 1...2 percentage points, which loading module for handling 156 x 156
i.e., the TFS 4X300 Atomic Layer corresponds to an approximately 10% mm wafers.
Deposition (ALD) System. The TFS 4X300 enhancement in the performance of the cell.
is a robust production tool intended for As a material, Al2O3 radically improves The throughput of the TFS 4X300 is 3000
continuous operation and high reliability. the quality of the surface passivation of p- wafers per hour with 20 nm of Al2O3 at a
type base and emitter, as well as n-type processing temperature of 200 °C (390
In order to reach the growing demand for base. As a coating means, ALD offers a °F). The TFS 4X300 supports the
clean energy at reasonable cost, solar refined and low-temperature deposition SECS/GEM protocol for process data
cells have to improve their performance- method for this. Several research groups collection. Cost of ownership calculations
per-cost ratio. Achieving higher efficiency have demonstrated charge carrier show figures less than 0.05 €/wafer.
with a thinner wafer has a positive impact lifetimes longer than 1 ms. Beneq now
on both performance and cost. However, offers, in addition to application specific Beneq Oy
this improvement has one basic contract deposition services, an industrial-
www.beneq.com
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