Harvard, IBM Crunch Data For More Efficient Solar Cells 65
Nerval's Lobster writes "Harvard's Clean Energy Project (CEP) is using IBM's World Community Grid, a 'virtual supercomputer' that leverages volunteers' surplus computing power, to determine which organic carbon compounds are best suited for converting sunlight into electricity. IBM claims that the resulting database of compounds is the 'most extensive investigation of quantum chemicals ever performed.' In theory, all that information can be utilized to develop organic semiconductors and solar cells. Roughly a thousand of the molecular structures explored by the project are capable of converting 11 percent (or more) of captured sunlight into electricity—a significant boost from many organic cells currently in use, which convert between 4 and 5 percent of sunlight. That's significantly less than solar cells crafted from silicon, which can produce efficiencies of up to nearly 20 percent (at least in the case of black silicon solar cells). But silicon solar cells can be costly to produce, experiments with low-grade materials notwithstanding; organic cells could be a cheap and recyclable alternative, provided researchers can make them more efficient. The World Community Grid asks volunteers to download a small program (called an 'agent') onto their PC. Whenever the machine is idle, it requests data from whatever project is on the World Community Grid's server, which it crunches before sending back (and requesting another data packet). Several notable projects have embraced grid computing as a way to analyze massive datasets, including SETI@Home."
Also, SETI... (Score:2, Insightful)
Nice of them to mention that SETI has also "embraced" this. It's only the largest and one of the oldest public projects to utilize distributed computing, having lead the way in the development and popularization of the technology.
Re:Why Efficiency? (Score:5, Insightful)
Because if you can build one at 3% and one at 9% but all other costs being the same, you build the 9% one. They're figuring out which is the most efficient so they know what order to look at capabilities/options on. Start with the most efficient, and work your way down the list until you find one that meets the other criteria.