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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.
Purdue researchers make solar cell manufacturing cheaper, more efficient with lasers
Is there anything lasers can't do? We only ask because they seem to be improving everything from microphones to railroads, and now researchers from Purdue University have leveraged the power of light to better manufacture solar cells. Using an ultrashort (as in quadrillionths of a second) pulse laser to more precisely scribe the microchannels connecting thin-film solar cells -- as compared to current mechanical stylus methods -- the Boilermakers were able to improve energy transfer efficiency between cells and significantly reduce manufacturing time. Having demonstrated the process works, research continues to better understand and prepare it for use by manufacturers -- sooner rather than later, we hope.
JA Solar and Innovalight team up to commercialize 'silicon ink' solar cells
We've seen a few different approaches to printable, and occasionally paintable solar cells over the years, but it looks like JA Solar was particularly taken with Innovalight's so-called silicon ink-based solar cells, and it's now announced that its teaming up with the company to commercialize the technology. In addition to being "printable" and cheaper to manufacture than traditional solar cells, the company also claims that the silicon ink solar cells also boast an impressive 18 percent conversion efficiency, which has apparently just been backed up by both the U.S. Department of Energy's National Renewable Energy Laboratory and The Fraunhofer Institute for Solar Energy Systems. Details on the deal are otherwise a bit light, but JA Solar says that it'll manufacture the new cells using its existing solar cell manufacturing lines, which should lower the cost even further and, if all goes as planned, allow for "initial commercialization" sometime in 2010.[Via CNET News Green Tech]
