IBM alliance sets efficiency record for solar power cells using common materials

IBM alliance sets efficiency record for solar power cells using common materials

There have been more than a few solar power efficiency records set in the past few months, let alone years. What makes IBM, DelSolar, Solar Frontier and Tokyo Ohka Kogyo think they can just waltz in and claim a record of their own? By using more commonplace elements in the periodic table, that’s how. The partnership’s new photovoltaic cell based on copper, zinc and tin (CZTS for short) can convert light rays to electric power with a 11.1 percent efficiency rate — still nothing to upset traditional silicon power, but a large 10 percent more efficient than anything else in the class. In its early form, CZTS can already be manufactured through ink printing and could be produced in quantities equivalent to about 500 gigawatts of power per year, or five times more than some of the next-closest alternatives. The group wants to improve CZTS’ efficiency over the course of the next several years, ideally reaching the point where it’s useful as a truly cheap, ubiquitous source of power. We’re looking forward to the day when there’s a little slice of solar energy in just about everything, hopefully including a few more hybrid cars and private aircraft.

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IBM alliance sets efficiency record for solar power cells using common materials originally appeared on Engadget on Mon, 20 Aug 2012 15:27:00 EDT. Please see our terms for use of feeds.

Permalink MIT Technology Review  |  sourceIBM Research  | Email this | Comments

Researchers make unsuitable parts work as solar cells, could lead to cheaper panels

Researchers make unsuitable parts work as solar cells, could lead to cheaper panels

Harnessing the power of the sun is a tricky business, but even the past few weeks have seen some interesting developments in the field. In this latest installment, researchers from the Lawrence Berkeley National Laboratory and the University of California have figured out a way of making solar cells from any semiconductor, potentially reducing the cost of their production. You see, efficient solar cells require semiconductors to be chemically modified for the current they produce to flow in one direction. The process uses expensive materials and only works with a few types of semiconductors, but the team’s looking at using ones which aren’t normally suitable — the magic is to apply an electrical field to them. This field requires energy, but what’s consumed is said to be a tiny fraction of what the cell’s capable of producing when active, and it means chemical modification isn’t needed.

The concept of using a field to standardize the flow of juice isn’t a new one, but the team’s work on the geometrical structure of the cells has made it a reality, with a couple of working prototypes to satisfy the skeptics. More of these are on the way, as their focus has shifted to which semiconductors can offer the best efficiency at the lowest cost. And when the researchers have answered that question, there’s nothing left to do but get cracking on commercial production. For the full scientific explanation, hit up the links below.

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Researchers make unsuitable parts work as solar cells, could lead to cheaper panels originally appeared on Engadget on Sat, 11 Aug 2012 11:34:00 EDT. Please see our terms for use of feeds.

Permalink Ars Technica, ScienceDaily  |  sourceNano Letters  | Email this | Comments

3D, light-trapping solar cells successfully fabricated by Solar3D

3D, lighttrapping solar cells successfully fabricated by Solar3D

Solar3D probably isn’t a company you’re particularly familiar with… at least not yet. The California-based manufacturer has just successfully fabricated a three dimensional solar panel that traps sun light in nano-scale wells on a silicon wafer. Perhaps most exciting, the prototype panel was built using off-the-shelf tech from Panasonic, meaning that the price of mass production shouldn’t be prohibitively high. More testing is needed, but the resulting panels should be up to 50 percent more efficient than current generation 2D ones. For a few more details, check out The PR after the break.

Continue reading 3D, light-trapping solar cells successfully fabricated by Solar3D

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3D, light-trapping solar cells successfully fabricated by Solar3D originally appeared on Engadget on Tue, 17 Jul 2012 20:11:00 EDT. Please see our terms for use of feeds.

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Alt-week 7.8.2012: Solar flares, trapping dark matter, and life-sized Lego trees

Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days.

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This week we swing by some superhero news, look at how solar panels might shape up in the future, explore a Lego forest and see how to grab dark matter just using some household gold and strands of DNA. Not only that, we discover how the sun likes to celebrate the fourth of July with its own firework display. This is alt / week

Continue reading Alt-week 7.8.2012: Solar flares, trapping dark matter, and life-sized Lego trees

Alt-week 7.8.2012: Solar flares, trapping dark matter, and life-sized Lego trees originally appeared on Engadget on Sun, 08 Jul 2012 16:30:00 EDT. Please see our terms for use of feeds.

Permalink   |  sourceTechnabob, Space, PhysOrg, Wired, Wired (2), Lego Festival  | Email this | Comments

Bsolar develops double-sided solar panels, boosts energy yield by nearly 50%


Most solar panels today generate electricity by directly facing the sun. While these panels definitely reap the benefits of the direct sunlight, they are missing out on the reflected sunlight. Bsolar, an Israeli startup, plans on fixing this problem with its bifacial solar panels. Bsolar first showed off their product in a German trade show last month and has announced a 730W project in Japan that it will get involved in.

While bifacial solar cell research has been around for a while, bifacial solar panels are quite new on the market as it has been very difficult to find a cheap way to produce a double-sided solar panel, let alone a regular solar panel. Bsolar took the silicon wafers, which have decreased in price over the years, and engineered into the wafers the ability to collect reflected light on either side. (more…)

By Ubergizmo. Related articles: Scientists develop solar-panels thinner than a thread of spider’s silk, Blackfriars Bridge solar panel installation to be completed in 2012,