Fraunhofer & Heraeus Ribbon Improves Module Power

Joint Research By Fraunhofer ISE & Heraeus Shows Average Power Gain Of 1.9 W With New Selectively Coated Ribbon Cell Connector Product In Conventional 60-Cell Solar Modules
07:22 PM (Beijing Time) - 26. October 2018
heraeus ise ribbon ctm

Fraunhofer ISE here shows its Cell-to-Module (CTM) analysis for selectively coated ribbon offered by Ulbrich/Heraeus and standard cell connection material. The power gain of 1.85 W is due to the improved use of light, it said. (Source: Fraunhofer ISE)

Key Takeaways

  • A joint research funded by the German Federal Ministry for Economic Affairs and Energy shows use of Selectively Coated Ribbon (SCR) cell connection material can lead to a power gain of 1.9 watt in a conventional 60-cell solar module
  • SCR helps increase the performance by reflecting the light indirectly onto the cell surface
  • The research team of Fraunhofer ISE and Heraeus claim this connector can be used in industrial PV module manufacturing with no need for system modification at extra cost

Selectively Coated Ribbon (SCR) cell connection material achieve an average gain of 1.9 W in conventional 60-cell solar modules. This ribbon product can be used in industrial PV module manufacturing with no need for system modification and at no extra cost, said Germany’s Fraunhofer Institute for Solar Energy Systems ISE and silver paste supplier for solar cells Heraeus.

Sharing the results of their joint research on SCR that was checked by Fraunhofer at its accredited TestLab PV modules, Heraeus said ‘the new connector has the best chance of asserting itself on the module market’ as a drop-in replacement in industrial process lines.

SCR reflects the light indirectly onto the cell surface, leading to an increase in performance, irrespective of the angle of incidence. Fraunhofer then used its software tool SmartCalc.CTM to assess exact calculation of the performance gain in advance.

“The CTM (Cell-to-Module) analysis showed a power gain of 1.85 W by increasing the internal reflection. Module measurements on a preliminary series showed an average power increase of 1.9 W, thus confirming the results of the CTM calculation,” said Fraunhofer ISE.

The German testing agency said this development work is part of the CONNECT Combined Metallization and Connection Technology for Efficient PV Modules project, funded by the country’s Federal Ministry for Economic Affairs and Energy (BMWi).

In September 2018, Heraeus announced a joint manufacturing and sales partnership agreement with Ulbrich Solar Technologies to manufacture SCR and sell it in Europe, Russia, Turkey, Middle East, Mexico and United States. (see Heraeus Partners With Ulbrich Solar For SCR).

TaiyangNews recently published its Advanced Solar Module Technology Report 2018, which show the latest commercially available products from leading suppliers and also discusses ways to improve CTM of for solar modules.

Anu Bhambhani

Anu Bhambhani is the Senior News Editor of TaiyangNews

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Anu Bhambhani