It's been nearly a year since Elon Musk revealed his intention to electrify the world’s roads with buses and trucks in addition to Tesla’s passenger cars. He hasn’t said much about the 18-wheeler—a proper unveil is set for September—except that it will use same motors as the upcoming Model 3, and that it would, of course, disrupt an industry that generates one quarter of US transportation-related greenhouse gas emissions.
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Perovskite solar cells promise cheaper and efficient solar energy, with enormous potential for commercialization. But even though they have been shown to achieve over 22% power-conversion efficiency, their operational stability still fails market requirements. Despite a number of proposed solutions in fabrication technology, this issue has continued to undercut whatever incremental increases in efficiency have been achieved. EPFL scientists have now built a low-cost, ultra-stable perovskite solar cell that has operated for more than a year without loss in performance (11.2%). The work is published in Nature Communications.
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