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| personals, relief, martha wainwright, lorraine bracco, scott tobias, 'literary magazine', gay, comics, tees, swear, live, government, movie times, toronto, lease, rude, rosario dawson, metrotimes, teens, wave sound files, ha ha, | A number of other parameters also remain to be settled, like how far charge carriers can travel in the material before being fund reabsorbed." [reply] by casedot on 12/02/05 [comment buried, show commenthide comment] + 0 diggs automagically said "Like someone else said, the hype and promises never seem to get here. We've all been dreaming of solar powered homes for a long time. Its still way too expensive, too rare to get ahold fund of, and will stay that fund way (maybe purposely for job and economic dependency reasons) for a while. Can you imagine all the jobs lost when people stop paying for electricity, or filling their cars with gas? It might be good for nature and the environment, but would be horrible at taking care of ourselves, at least without a long transition." |
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| The most efficient multijunction solar cell yet made -- 30 percent, out of a possible 50 percent efficiency -- has just two layers. " "Two layers of indium gallium nitride, one tuned to a band gap of 1.7 eV and the other to 1.1 eV, could attain the theoretical 50 percent maximum efficiency for a two-layer multijunction cell. (Currently, no materials with these band gaps can metrotimes be grown together.) Or a great many layers with only small differences in metrotimes their band metrotimes gaps could be stacked to approach the maximum theoretical efficiency of better than 70 percent. It remains to be seen if a p-type version of indium gallium nitride suitable for solar cells can be made. Here too success with LEDs made of the same alloy gives hope. |
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