At Solar Power International 2013, 3M Renewable Energy is debuting its latest backside busbar tape, ‘4706’ which allows manufacturers to eliminate silver-based backside busbars, enabling cost savings and protecting against the volatility of silver prices.
In addition the 4706 backside busbar tape is claimed to have the potential to improve absolute efficiency by approximately 0.2%.
Unlock unlimited access for 12 whole months of distinctive global analysis
Photovoltaics International is now included.
- Regular insight and analysis of the industry’s biggest developments
- In-depth interviews with the industry’s leading figures
- Unlimited digital access to the PV Tech Power journal catalogue
- Unlimited digital access to the Photovoltaics International journal catalogue
- Access to more than 1,000 technical papers
- Discounts on Solar Media’s portfolio of events, in-person and virtual
Or continue reading this article for free
The tape can be bonded to aluminium pastes, commonly used on the back surface of crystalline solar cells, and provides reliable, low-resistance electrical contact comparable to backside silver busbars, providing potential to improve absolute efficiency by approximately 0.2%, according to the company.
The tape is a copper foil tape coated with a high-performance heat-curable adhesive on one side, with preliminary tests demonstrating a stable long-term electrical performance in damp heat and thermal cycling.
3M can be found at booth #426 at SPI.
