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| Acquired by First Solar in 2013, San Jose-based TetraSun had been working on bifacial silicon solar cells and 'TOPCon' technology that is able to boost cell efficiency by reducing electron recombination. Although First Solar never used the technology in its own CdTe-based modules, it still owns the TetraSun intellectual property and is suing Chinese rival JinkoSolar. Photo: First Solar. |
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