Sun Chemical offers one-stop shop for solar cell metallization solutions

Facebook
Twitter
LinkedIn
Reddit
Email

Sun Chemical is now offering a broad range of metallization solutions for both additive and subtractive processes as well as module materials for use in the crystalline silicon (c-Si), thin film, printed electronics and other emerging markets. Products being highlighted include a variety of silver tabbing and aluminum backside pastes such as ‘SunTronic’ Cellmet 437W Backside Aluminum paste and SunTronic Cellmet 451W Silver Tabbing Paste.

Problem

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Solar cell manufacturers are continually searching for new ways to reduce the cost of solar cells in both additive and subtractive processes for metallization pastes, insulators, and resists.

Solution

One of the key products being featured includes SunTronic Cellmet Aluminum metal pastes which are formulated for screen printing processes. Cellmet 437 was developed for use as the back electrode on mono or multi-crystalline silicon solar cells. These low bow, green environmental and health hazard friendly aluminum pastes are specially designed to form p+ doped layer when fired on a p-doped silicon photovoltaic devices. This paste has been optimized to eliminate Al bead formation during the firing process and has been optimized to be co-fireable with Sun Chemical’s and others front side silver and back side silver metallization pastes.

Applications

Back-surface electrode on mono or multi-crystalline silicon solar cells.

Platform

Cellmet 437 is specially designed to fire through the back surface of the silicon solar cells 180-220 mm thick. When fired at ~ 780oC peak temperature it gives the low bow of ~1.0 mm for 200 ± 20 micron thick 6” wafer as well as excellent electrical properties. The paste viscosity (40 ± 10 Pa.S) (no shear rate figure was given) is said to be suitable for screen printing of the complete back metallization. The product is fritted using an environmentally friendly lead and cadmium free glass composition and can be fired over a broad range of conditions including co-fire process techniques with front contact silver inks.

Availability

Currently available.

Read Next

September 17, 2025
US renewables developer Longroad Energy has reached financial close for its 400MW 1000 Mile solar project in the US state of Texas.
September 17, 2025
Spanish renewables developer and operator Acciona Energía has commissioned its 412MWp Juna solar PV plant in Kawani village in the western state of Rajasthan. 
September 17, 2025
Spanish IPP Velto Renewables has acquired a portfolio of 53 operational solar assets in Spain with a combined capacity of 260MW.
September 17, 2025
Struggling Swiss solar manufacturer Meyer Burger has formally entered into a debt moratorium, with the possibility of rescuing the entire group now looking unlikely.
September 17, 2025
Nexamp has secured US$350 million through a long-term financing facility to expand its 6GW utility-scale solar and battery storage pipeline in the US. 
September 17, 2025
Chinese module producer DAS Solar is planning a 5GW manufacturing facility focused on producing high-efficiency back contact cells.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines
Solar Media Events
October 7, 2025
San Francisco Bay Area, USA