EANS-News: Sunways AG / Monocrystalline silicon solar cells metallised by screen printing reach efficiency in excess of 19 percent

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Subtitle: - Collaboration between Sunways AG and Institut für
Solarenergieforschung Hameln (ISFH)
- Increased efficiency through improved back

Konstanz (euro adhoc) - Konstanz/Germany, 11 March 2010 - Sunways AG (FSE: SWW;
ISIN DE0007332207) ) and the Institut für Solarenergieforschung Hameln (ISFH)
have reached an important milestone as part of a joint development project with
the aim of further increasing the efficiency of silicon solar cells. Using
established screen printing technology for metallising silicon solar cells the
team succeeded in producing monocrystalline cells with an efficiency of 19.1
percent.
The work focused on the development of a highly efficient back for silicon solar
cells, resulting in yield improvements in the long-wave range of the solar
spectrum. This approach combines the high efficiency potential of the new back
with the tried and tested processability of solar cells that have been
metallised by screen printing. The individual process steps for the production
of the prototypes with an area of 155 square centimetres (5-inch cells) were
carried out at ISFH and under near-production conditions at Sunways.
Roland Burkhardt, Chief Technology Officer of Sunways AG, said: "I am delighted
with the success of our development work. An efficiency of more than 19 percent
for silicon solar cells with screen-printed contacts is an internationally
leading achievement. This impressive progress is the result of our long-standing
successful cooperation with the Institut für Solarenergieforschung Hameln
(ISFH)." He added: "Sunways aims to continuously improve the technical potential
and conditions for generating electricity from the sun. In this way we keep
improving the electricity yield and the benefit of photovoltaic systems."

About Sunways
Sunways AG, Konstanz/Germany, stands for consistent use of solar energy to
secure long-term energy supply of man in an efficient and sustainable manner.
Sunways offers technological competence, performance and highest quality - from
single components to complete solar systems.Since its foundation in 1993,
Sunways AG evolved into a technology leader in the photovoltaics industry
serving international markets.
With silicon-based solar cells, inverters, solar modules and solar systems, the
company offers all components required for high-yield photovoltaic power
generation. With photovoltaic solutions tailored to customers´ needs
(transparent and coloured solar cells, building-integrated photovoltaic
installations), Sunways turns exceptional ideas into reality.
Sunways Production GmbH in Arnstadt/Germany is a subsidiary of Sunways AG; in
addition, the group has own branch offices in Barcelone/Spain and Bologna/Italy.
In 2008, Sunways AG with about 370 employees realised sales of about EUR 260
million.
The shares of Sunways AG are listed at the Frankfurt Stock Exchange (SWW, ISIN
DE0007332207).
For further information, please visit www.sunways.de.

Further inquiry note:
Dr. Harald F. Schäfer
Leiter Unternehmenskommunikation & Investor Relations
Tel.: +49 (0)7531 996 77-415
E-Mail: [email protected]
end of announcement euro adhoc
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issuer: Sunways AG
Macairestr. 3 - 5
D-78467 Konstanz
phone: +49 (0)7531 99677 0
FAX: +49 (0)7531 99677 10
mail: [email protected]
WWW: http://www.sunways.de
sector: Alternative energy
ISIN: DE0007332207
indexes: CDAX, Prime All Share, Technology All Share
stockmarkets: regulated dealing/prime standard: Frankfurt, free trade: Berlin,
Hamburg, Stuttgart, Düsseldorf, München
language: English

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