1 Announcement That The Technological World Has Been Awaiting
Natcore Produces First Germanium Quantum Dot-Based Solar Cell
Posted by : David Rutkin On : February 17, 2015
Potential Precursor to Flexible, High Efficiency Tandem Solar Cell
Red Bank, NJ - (February 17, 2015) - Scientists working with Natcore Technology Inc. (TSX-V: NXT; NTCXF.PK) in the Rice University laboratories of Prof. Andrew Barron, a Natcore co-founder, have successfully formed a heterojunction solar cell using germanium quantum dots on an ordinary n-type silicon wafer.
Individual germanium quantum dots were coated with silicon dioxide (silica), doped to make them p-type, and then deposited, using Natcore's liquid phase deposition (LPD) process, on a commercial-grade silicon wafer. The LPD process was developed at Rice and is licensed exclusively to Natcore.
"Very simply put, we used our proprietary process to 'dope' silica-coated germanium quantum dots and arrange them in a silica film atop a commercial silicon wafer. We then put contacts on the coated wafer to create a cell, and exposed it to light. We obtained a net power out of the device," says Dr. Dennis Flood, Natcore's Chief Technology Officer and also a company co-founder.
Quantum-dot solar cells have the potential to be transformational for terrestrial solar energy, with efficiencies far above anything available commercially today.
The advantage lies in the fact that by carefully controlling the size of the quantum dots, the cell can be "tuned" to capture energy from a specific spectrum of light. The portion of the spectrum not captured passes to the next layer below, where it can then be captured by either a specifically tuned lower quantum-dot cell or even an ordinary silicon cell.
Submitted by Ella Ruth
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