Bruker Energy & Supercon Technologies & PVA TePla Announce Cooperation Agreement to Develop a Superconducting Crystal Growth ...
December 09 2010 - 6:00AM
Business Wire
Bruker Energy & Supercon Technologies, Inc. (BEST) and PVA
TePla AG (PVA) announced today that they have signed a cooperation
agreement on the joint development of a more efficient
monocrystalline Si-growing process for photovoltaic (PV)
applications.
The innovative concept is based on the application of the strong
magnetic field produced by a novel type of superconducting crystal
growth magnet (SC-CGM) under development at BEST, and designed
specifically for PV applications. The SC-CGM is expected to be
integrated with a crystal puller at PVA TePla’s Competence Center
for Industrial Crystal Growth (CCIC) in Wettenberg, Germany.
Today, the efficiency of solar cells is often degraded by too
high of an oxygen content in the crystal structure. The oxygen
stems from the Si-Oxide which is used in the crucible wall of the
growing furnace for the so-called Czochralski process. The
application of a magnetic field along with special process control
is expected to dampen the melt flow and thus the transport of
oxygen to the crystal, enabling a more homogenous crystal
lattice.
Dr. Detlef Krischel, the Managing Director at BEST responsible
for the SC-CGM product line, explained: “The goal of our
cooperation with PVA TePla is to demonstrate the increase in solar
cell photovoltaic conversion efficiency, which has been predicted
by computer simulations, along with achieving a stable yield of
crystal production. We believe the planned novel magnetic field
characteristics will allow us to better control process parameters,
which are key for a high productivity Si-growing process.”
Mr. Michael Volk, Division Manager of PVA Crystal Growing
Systems, added: “We believe integration of a strong magnet with our
puller will allow us to offer an improved turn-key system to our
customers based on a robust crystal growing process. We also
believe higher efficiency of solar cells with a stable yield will
help the PV industry to bring down the overall cost for PV
modules.”
BEST and PVA TePla expect first results from their cooperation
in the spring of 2011.
About Bruker Energy & Supercon Technologies, Inc.
BEST is a subsidiary of Bruker Corporation (NASDAQ: BRKR), and
is a leader in the development and manufacturing of advanced
superconducting materials and superconducting devices for
alternative energy, smart grid, healthcare and “big science”
applications. For more information on BEST, please visit
www.bruker-est.com.
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