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news digest ♦ Solar


highest efficiency flexible solar cells on polymer as well as metal foils”, says Tiwari. The projects were supported by the Swiss National Science Foundation (SNSF), the Commission for Technology and Innovation (CTI), the Swiss Federal Office of Energy (SFOE), EU Framework Programmes as well as by Swiss companies W.Blösch AG and FLISOM.


Scaling up production of flexible CIGS solar cells


The continuous improvement in energy conversion efficiencies of flexible CIGS solar cells is no small feat, says Empa Director Gian-Luca Bona. “What we see here is the result of an in-depth understanding of the material properties of layers and interfaces combined with an innovative process development in a systematic manner. Next, we need to transfer these innovations to industry for large scale production of low-cost solar modules to take off.” Empa scientists are currently working together with FLISOM to further develop manufacturing processes and to scale up production.


http://www.empa.ch/plugin/template/ empa/3/107443/---/l=2


GT Solar launches ASF100 sapphire growth system


The new advanced system increases yielded output of high quality sapphire material.


GT Solar International, a global provider of sapphire and silicon crystalline growth systems and materials for the solar, LED and other specialty markets, has revealed the ASF100 advanced sapphire growth system.


The ASF100 increases yielded output of sapphire material by producing a larger, 100 kilogram sapphire boule in the same chamber as previous versions of the furnace.


“We have received an enthusiastic response from early adopter customers for our ASF sapphire growth systems as they enter the market to provide high quality sapphire material for the fast-growing LED industry,” said Cheryl Diuguid, vice president and general manager of GT Solar’s sapphire equipment and materials group. “Our advanced sapphire crystallisation systems are built on a highly scalable and reliable architecture that lets customers quickly ramp to volume production with a lower capital investment compared with other competing crystallisation technologies.”


With over 40 years of proven sapphire production and crystalline growth process technology, the ASF100 provides a highly automated, low risk operating environment, capable of producing consistently uniform sapphire boules that yield high quality material ideally suited for high brightness (HB) LED applications. “With competing crystallisation technologies customers entering the sapphire crystallisation market are forced to choose between systems that provided quality or systems that offer high throughput,” continued Diuguid. “Our ASF100 offers high quality and high volume so


162 www.compoundsemiconductor.net October 2011


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