Wherever glass meets air, about 4% of the light hitting the glass at a perpendicular angle is reflected. And that percentage rises steeply as the light’s angle of incidence increases. Obviously, for solar energy systems, reflected light is wasted light! KhepriCoat minimizes the reflection to deliver a record-breaking performance in terms of light transmission- a power gain over uncoated modules of around 3% in flash tests, and an improved additional light gain over the daily cycle of systems in the field exceeding 4% thanks to its outstanding angular effect.
The Heraeus Photovoltaics Business Unit
SOL9620 Series and SOL9621 Series
THE SOL9620 SERIES and SOL9621 Series represent Heraeus’ latest pastes that enable cell manufacturers to further increase their c-Si cells’ conversion efficiencies to an industry-leading level and beyond. The development of these two products are for customers with slightly different LDE applications and processing; however both pastes provide superior cell efficiencies while lowering customers’ cost per watt.
The SOL9620 Series is outstanding for ultra-lightly doped emitters [ULDE], with surface doping concentrations down to 1xE20/cm3. The SOL9620 Series has demonstrated the highest performance during customer testing, particularly on monocrystalline wafers. Relative to the SOL9610 Series on 110 Ω/sq. monocrystalline wafers, the SOL9620 Series demonstrated an 80% reduction in contact resistance; approximately a 3mV increase in Voc; and up to 0.25% absolute efficiency gains.
The unique chemistry of SOL9620 Series also enable the ability to be fired through different combination of passivation layers and at a relative lower peak temperature
than standard firing temperatures. This is ideal for PERC applications.
The SOL9621 Series has demonstrated great results for regular emitter and LDE applications. When tested against Heraeus’ SOL9610 Series on 85 Ω/sq. multicrystalline wafers, customers experienced higher electrical performance: a 50% reduction in contact resistance; a 1 – 2 mV increase in Voc; and greater than 0.10% absolute efficiency gains. The SOL9621 Series provides customers with a flexible and robust process window, which aids in providing a lower manufacturing cost. SOL9621 is also highly recommended for the 1st and 2nd layer of double printing applications with customers confirmed efficiency gain greater than 0.10% over the best commercially available double printing pastes.
Krempel GmbH AKASOL
AKASOL backsheet reliability protects PV modules against UV radiation and moisture during their useful life-long service. We offer a combination of polymer films and fluoropolymer films like TEDLAR-PVF film and KYNAR-PVDF film for tailored process solution. AKASOL has convinced manufacturers of PV modules across the globe of its high quality due to excellent mechanical, electrical and chemical properties as well as its exceptional weather resistance.
or with copper foil for back-contact solar cells.
Long service life and consistently high product quality guaranteed by ISO/TS 16949 and ISO 9001. The requirements of IEC 61730-1 and IEC 60664-1 are well exceeded. Certain types are approved as ”UL Recognized Component“ ( File No. QIHE2. E312459) and are TÜVdotCOM certified (ID 0000033022).
Conform to RoHS and REACH. Practice-relevant variety: High-grade economical multi-layer combinations of 4-, 3- and 2-layer design. Numerous film colours to meet different visual requirements. Different thicknesses for different system voltages.
Compatible with all relevant encapsulating polymers. Excellent adhesive quality due to specially applied physical surface treatment.
Supplied as rolls or sheets for easy handling in customised dimensions. Press-cut structures on request. Labelling for traceability, also permanent marking for the life cycle of a module.
The Solar Industry Awards will be announced 9 September 2014
Product family groupings specially developed for photovoltaic engineering from combinations of various polymer films (PVF, PVDF, ETFE, PET, modified PET). Optional with aluminium foil as moisture barrier for thin-layer modules
46
www.solar-international.net I Issue IV 2014
and the Awards ceremony will be held on the 23 September 2014
at Sofitel Legend The Grand in Amsterdam
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