news digest ♦ Power Electronics


With a strong supply chain supported by leading materials suppliers and continuing to expand, customers will only continue to have more and more flexibility to choose the material adhesive that best suits their manufacturing requirements and processes.


Initially created to drive the advancement of 3D IC commercialisation, EVG’s ZoneBOND technology provides a breakthrough approach for temporary wafer bonding, thin-wafer processing, and debonding applications – overcoming the last remaining limitations associated with thin-wafer processing.


Benefits of ZoneBOND technology include: standardisation of processes and equipment, the use of silicon or glass carriers; compatibility with existing, field-proven adhesive platforms; and the ability to debond at room temperature with virtually no vertical force being applied to the device wafer.


To support grinding and backside processing at high temperatures and to allow for low-force carrier separation, ZoneBOND defines two distinctive zones on the carrier wafer surface with strong adhesion in the perimeter (edge zone) and minimal adhesion in the centre zone.


As a result, low separation force is only required for carrier separation once the polymeric edge adhesive has been removed by solvent dissolution or other means. The EZR (Edge Zone Release) and EZD (Edge Zone Debond) modules can be easily integrated in EVG’s high-volume manufacturing equipment platforms such as the EVG850 TB/DB Series.


Azur Space orders two Aixtron reactors for solar cells


The firm will use the reactors to manufacture gallium arsenide based cells for terrestrial applications


Aixtron SE has a repeat order for further MOCVD systems from Azur Space Solar Power GmbH of Heilbronn, Germany.


118 www.compoundsemiconductor.net October 2012


The new contract is for two MOCVD systems to be dedicated to the growth of GaAs materials for the production of concentrated photovoltaic (CPV) solar cells for terrestrial applications.


Aixtron Europe’s service support team will install and commission the new reactors during the second half of 2012 in a cleanroom facility in Heilbronn.


Juergen Heizmann, Managing Director of Azur Space Solar Power GmbH, says, “Our existing Aixtron MOCVD systems have more than proved themselves, so now it is time to further expand production with two new systems. Adding more equipment from Aixtron has many advantages in terms of start-up speed, continuity and process transfer.


“It will also ensure a seamless and smooth transition to the next step in our strategic plans to move production to 6-inch wafers. This is a key step in the planned evolution towards high performance materials, but with the economic advantages of larger diameters. We therefore look forward to working with the Aixtron team,” continues Heizmann.


Azur Space Solar Power GmbH is a developer and manufacturer of high efficiency solar cells for space and terrestrial applications; the latter based on the CPV concept. With over four decades of experience in space solar cell technology, its product range covers several types of silicon and III-V solar cells, including those on germanium wafers.


CPV technology uses lenses to concentrate sunlight onto a small area of photovoltaic materials in order to generate electricity. Among its advantages, and in contrast to more conventional flat panel systems, CPV systems can be much less expensive to manufacture.


Maximising the commercial potential via the highest efficiency and lowest cost requires the ability to manufacture low-cost, light-concentrating optical systems and III-V materials. It is here that MOCVD systems such as the Aixtron platforms are bringing these objectives to commercial reality with many companies worldwide.


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