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Heraeus Concentrating Solar Cell R&D in Keystone State (Ind. Report)
Date: 2014-07-07
West Conshohocken, Pennsylvania will soon be the sole R&D center for Heraeus's PV business unit's solar cell metallization pastes. A total of 200 R&D scientist and staff from the company's regional R&D centers in Hanau, Germany and Singapore are all being relocated to Pennsylvania as part of the company's plan to bring next-generation products to market faster. (Source: Heraeus, PV Tech. July 4, 2014) Contact: Heraeus,

Tags Heraeus news,  Solar news,  Solar Cell news,  

PERC Silicon Solar Cells Score Efficiency Record (Ind. Report)
Heraeus, Institute for Solar Energy Research
Date: 2014-05-14
The Institute for Solar Energy Research Hamelin (ISFH) increases the conversion efficiency of industrial p-type silicon solar cells with screen-printed metal contacts from today's typical 17.5% to 19.5% to a record value of 21.2%, using leading-edge front-side metallization pastes supplied by the Photovoltaics Business Unit of Heraeus Precious Metals.

21.2 percent is the highest efficiency reported to date for industry typical silicon solar cells using screen-printed metal contacts. The measurements were confirmed by the independent institute Fraunhofer ISE CalLab. A combination of different technologies enabled this great result on an industrial PERC solar cell.

As opposed to conventional solar cells, PERC cells have a passivated rear-side, which increases the amount of energy captured from the cell. ISFH's cell design incorporates a narrow front-side grid design using a dual printing process and an advanced five busbar design. This special layout enables the reduction of finger line widths to 46 μm, which decreases shadowing losses and serial resistance. The narrower finger lines were printed with an industry-leading front-side silver metallization paste of Heraeus that processes a high fill factor and low series resistance. The busbars were printed using Heraeus' newest low activity paste. This paste does not fire through the passivation layer, which results in an additional boost in Voc. (Source: Institute for Solar Energy Research Hamelin,; Heraeus,

Tags Solar Cell Efficiency news,  Heraeus news,  

DuPont, Heraeus Settle PV Paste Patent Litigation (Ind. Report)
DuPont, Heraeus
Date: 2013-10-30
Wilmington, Delaware-headquartered DuPont and Heraeus Precious Metals North America Conshohocken LLC have announced the settlement of all pending lawsuits between the two companies regarding the photovoltaic paste business. The settlement includes Civil Action No. 1:11-cv-00773-SLR-CJB, regarding infringement of U.S. Patent No. 7,767,254, and Civil Action No. 3:12-cv-01104-HU regarding infringement of U.S. Patent No. 8,158,504.

Neither company has admitted any liability with respect to these lawsuits. Other terms of the settlement were divulged and are confidential. (Source: DuPont, 29 Oct., 2013) Contact: DuPont Photovoltaic,; Heraeus,

Tags DuPont news,  Heraeus news,  PV Paste news,  PV news,  

DEK Helps Break Solar Cell Efficiency Barriers (Ind. Report)
DEK Solar,Institute for Solar Energy Research Hamelin
Date: 2013-10-11
Building on earlier work conducted in conjunction with the Institute for Solar Energy Research Hamelin (ISFH), DEK Solar has further optimized its Dual Print stencils and screens to push past previous industry cost and cell efficiency benchmarks to a record 20.2 percent cell efficiency on a PERC solar cell via a Dual Print process with a remarkable front-side metallization silver cost of less than $0.01 per Wp.

The ground-breaking research was carried out last month at the ISFH facilities in Emmerthal, Germany and utilized ISFH's PERC solar cells, DEK Solar's Eclipse metallization platform as well as its Dual Print screens and stencils, and optimized front-side silver metallization pastes from Heraeus. This combination of robust manufacturing techniques, high performance materials and exceptionally accurate metallization systems has delivered on the industry's ultimate goal: High efficiency and low cost.

DEK provides next-generation technologies and process support to solar cell manufacturers. DEK's solutions include: modular metallization platforms; precision screens and materials applications used in back side field coating; current-collector pattern and termination deposition for photovoltaic substrate production. (Source: DEK Solar, Oct., 2013) Contact: DEK Solar, (480) 584-9502 ,,; Institute for Solar Energy Research Hamelin,; Heraeus,

Tags Heraeus news,  DEK Solar news,  Solar Cell Efficiency news,  Solar Cell news,  Solar news,  

Heraeus Intros Low-Silver Solar Cell Paste (New Prod & Tech)
Date: 2013-07-15
West Conshohocken, Pennsylvania-based Heraeus has introduced its new its SOL202 Series low-silver back-side paste for solar photovoltaic (PV) production. According to company estimates, the SOL202 Series pastes provide 18 percent greater adhesion than previous generations of back-side tabbing pastes, with only 45 percent the silver usage.

"With our recent purchase of the Ferro Corporation's Solar Paste Business, our combined R&D efforts have made significant reductions in Ag usage in back-side tabbing pastes while maintaining excellent performance," said Heraeus Photovoltaics Business Unit VP of Technology Dr. Weiming Zhang. "This reduction in silver usage, combined with excellent performance will assist customers in reducing their cells' cost per watt. Depending on the customer's application, we believe we can reduce the silver content further." (Source: Heraeus, July 9, 2013) Contact: Heraeus,

Tags Heraeus news,  Solar Cell news,  PV news,  

Heraeus Lowers Silver Content per Cell, Maintains Solar Cell High-Efficiency (Ind. Report)
Date: 2012-07-11
German precious metals specialist Heraeus continues to focus on improving the value of their customers' solar cells by reducing the silver content and usage per cell of their pastes for front-side and back-side applications while improving the cells' efficiency.

According to Andy London, Global Manager of Heraeus Photovoltaics, "Heraeus develops front-side and back-side pastes that lower the silver content per cell. Front-side silver paste has become an increasing cost in the production of crystalline solar cells as silver bullion prices have escalated to historic highs. Heraeus addresses the need to reduce that cost by producing silver pastes that allow for up to 40% reduction in silver usage." London says, "Heraeus SOL9600, our current new product for the front-side, prints finer lines thus reducing silver usage and increase efficiency due to less shading. Heraeus SOL205S, our current product for the back-side, is produced using 52% silver content, further reducing silver usage on the cell. Heraeus SOL315, our current product for passivated emitters has a silver content significantly less than standard pastes." London also says "Silver bullion prices have eased over the last nine months, as increased silver bullion production has resulted in an oversupply. Whether this is a permanent situation or not, Heraeus will continue in the direction of reducing the silver usage in cells." (Source: Heraeus, PR, July 10, 2012) Contact: Heraeus Precious Metals North America Conshohocken LLC Photovoltaics Business Unit, David McMullen, Marketing and Business Development, (610) 825-6050,,,

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Heraeus Intros SOL315 in San Francisco (New Prod. & Tech.)
Date: 2012-07-05
Industry leader showcases new low activity silver paste for new passivation layer cell designs, an advance cell design that helps improve a cell's efficiency The Heraeus Photovoltaics Business Unit will feature their latest pastes for conventional and advanced cell designs at this year's Intersolar North America 2012, July 10th-12th in San Francisco. One of the products highlighted will be SOL315, low silver content paste for new passivation layer cell designs, an advance cell design that helps improve a cell's efficiency.

SOL315 can be used for front-side and backside applications. When SOL315 is screen printed and fired onto passivated silicon wafers, it does not penetrate the passivation layer. SOL315 enables a significant reduction of charge carrier recombination on passivated c-Si wafer surfaces, where good adhesion is required but contact formation is undesired. SOL315 can be used as a floating busbar on the front-side of c-Si cells. As back-side soldering pads, SOL315 possesses high mechanical adhesion on dielectric layers, excellent soldering compatibility, easy printability and lower paste consumption go to. (Source: PR, Heraeus, July 2, 2012) Contact:Heraeus Precious Metals GmbH Co. KG Photovoltaics Business Unit, Verena Klotz, Marketing, + 49 (6181) 35-3544,,,

Tags Heraeus Photovoltaics news,  

Heraeus Offering New SOL9600 Series Metallization Paste (New Prod. & Tech.)
Date: 2012-06-13
The Heraeus Photovoltaics Business Unit, a developer and manufacturer of silver metallization pastes, is introducing its new SOL9600 Series of front-side metallization pastes at the Intersolar Europe 2012 Exhibition in Munich, Germany this week. The SOL9600 Series of pastes is touted as a significant improvement over the company's SOL9235 and SOL9411 pastes. Along with higher efficiency, the SOL9600 Series offers a wider processing window due to its uniformity in contact resistance on wafers with substantial variations in sheet resistance. The new Heraeus SOL9600 Series for conventional c-Si solar cells has demonstrated up to a 35% decrease in contact resistance on regular and high sheet emitter wafers and an absolute efficiency improvement of up to 0.3%. As with all Heraeus metallization pastes, the SOL9600 series offers a wider processing window during firing, which provides a tighter production output distribution and improves yields. The SOL9600 Series is ideal for applications requiring higher efficiency and finer line resolution printing. More information can be found at (Source: Heraeus, PR, 11 June, 2012) Contact:s Heraeus Precious Metals GmbH Co. KG Photovoltaics Business Unit, Verena Klotz, Marketing, + 49 (6181) 35-3544,,

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