Patent Issued to Bandgap Engineering for Silicon Nanowire Solar Cells

Woburn, MA – March 27th, 2012 – Bandgap Engineering, a developer of silicon nanowire solutions, announced today that it had secured a key patent representing significant breakthroughs in solar energy conversion efficiency and cost. 

United States Patent #8,143,143, entitled “Process for Fabricating Nanowire Arrays,” covers technology to form nanowire arrays using a low cost process known as metal–enhanced etching of silicon.  Using this process, the nanowire diameter, density, and length are controllable which allows the nanowire array to be tuned for optimal solar cell efficiency.

In describing the patents, Dr. Black explained, “This latest patent teaches a process that Bandgap developed to produce low-cost nanowire solar cells.  Nanowire solar cells increase the efficiency of crystalline solar cells by 1-2% points.  By using this low-cost process, nanowire solar cells can have a lower price per watt than conventional solar cells, thus lowering the cost of solar electricity and moving us closer to the goal of replacing coal power with solar power. This patent is a key piece of our patent portfolio which covers the fabrication, device design, and use of nanowires in photovoltaics.”

About Bandgap Engineering:
Founded in 2007, privately held Bandgap Engineering develops silicon nanowire solutions to make renewable power more efficient, less material-intensive, and more cost-effective than conventional power. Bandgap's nanowire-enhanced solar cell designs combine low-cost processing with crystalline silicon to yield high-efficiency products. Their tunable silicon nanowires make these designs possible, helping to make solar power cost-competitive with conventional grid power.  Bandgap is also developing  silicon nanowires for high-capacity Li-ion battery anodes.

Bandgap Engineering
Marcie Black, 781-902-0310

Bandgap Engineering, Inc.