30 Nov '12, 3pm

Powerful PVs Approach 50 Percent Efficiency

Powerful PVs Approach 50 Percent Efficiency

Silicon Valley start-up Solar Junction has raised the bar for solar efficiency to 44 percent, and even higher values are in the cards: The company has a road map for reaching 50 percent efficiency and beyond.
 To break the efficiency record, Solar Junction built a cell with three regions, known as junctions, that are stacked on top of one another; each absorbs a different spectral region of the sun’s rays. The result is a device that delivers far more energy than conventional cells do. Ordinary photovoltaics have just a single junction. Each junction in the triple-junction cell operates at a different output voltage, and they are connected in series, so the total power produced gets a boost. 
 Manufacturing a triple junction is not a first, but the type of material that Solar Junction uses for the bottom cell, known as dilute nitride, is new. In this case, the material is ...

Full article: http://spectrum.ieee.org/green-tech/solar/powerful-pvs-ap...

Tweets

Struggling CPV #industry main advantage is land...

semiconductor-today.com 02 Dec '12, 11am

Azur Space develops, produces and supplies bare solar cells for space and terrestrial CPV customers. The firm has been act...

Designing a new home? Follow these tips for ene...

greenbuildingadvisor.com 01 Dec '12, 11am

2. Here are my sources for measured energy savings attributable to the use of a drainwater heat recovery device: a. Energy...

4 affordable ways to improve you windows energy efficiency: #windows #QHI

4 affordable ways to improve you windows energy...

greenbuildingadvisor.com 01 Dec '12, 7pm

There are many reasons to replace windows, but energy efficiency is not the best reason. Replacing the windows in an older...

Nearly 50 percent of new electricity generation added in 2012 was renewable

Nearly 50 percent of new electricity generation...

grist.org 05 Dec '12, 10pm

Every month, the Federal Energy Regulatory Commission puts out a report called the “Energy Infrastructure Update” [PDF]. I...

New Look - 50% off Party: [[Read more here

New Look - 50% off Party: [[Read more here

tualobang.blogspot.com 05 Dec '12, 3pm

Hi, thanks for visiting. Here's a simple FAQ for the site: 1. We provide multiple content push options: a) Subscribe to em...

New Prevage, Elizabeth Arden's Newest & Most Powerful Anti-aging Serum: The most potent Anti…

New Prevage, Elizabeth Arden's Newest & Most Po...

luxuryhaven.blogspot.com 02 Dec '12, 5am

The most potent Anti-aging Serum will hit the stores soon! Elizabeth Arden will be launching their new Prevage Anti-Aging ...

Energy Efficiency and a Cold Marriage

renewableenergyworld.com 03 Dec '12, 3pm

We know energy efficiency can save the world, but can it save a marriage? Leave it to the New York State Energy Research a...