cSI PHOTOVOLTAIC SOLUTIONS - Manz

LASER PROCESS
SOLUTIONS
Manz is working intensively on new methods to increase both the efficiency of solar
cells and throughput rates, while at the same time cutting solar cell manufacturing
costs. To do so, Manz uses high-efficiency laser processes to achieve this goal.
To generate a selective emitter, Manz uses a laser-based procedure developed by
the ipe (University of Stuttgart, Institute for Physical Electronics). With this technology,
using an additional laser-processing step, the level of doping under the contact
structure, which is applied in a later stage of the process, is increased significantly.
In conjunction with Manz’s HAP (high accuracy printer), an increase in the solar cell’s
efficiency of up to 0.5% can be achieved. During the development of these systems,
Manz ensured that existing cell production lines can be upgraded.
Manz’s laser systems are applied for many other Manz high accuracy processes
such as: Laser edge isolation, dielectric layer opening or laser drilling to generate
back-contact cells such as MWT and EWT.
Laser Edge Isolation Selective Emitter
LASER EDGE ISOLATION
Edge isolation by laser grooving
High throughput of up to 2,400 wafer/h
Safe wafer handling and lowest breakage rates
Loading/Unloading from/into Manz Box/Cassette or alternative carrier
Modular design – available as inline or stand-alone system
Combination of high performance laser process with high precision machine
allows a minimum “dead area” (≤ 100 µm)
SELECTIVE EMITTER
High throughput of up to 2,400 wafer/h
Safe wafer handling – lowest breakage rates
Increase of cell efficiency up to 0.5% in combination with high ohmic emitter
and Manz HAP (high accuracy printing)
Loading/Unloading from/into Manz Box/Cassette or alternative carrier
Modular design – available as inline or stand-alone system
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Minimum dead area
of ≤ 100 µm
Lowest breakage rates
Increase cell efficiency up to 0.5%