QDSC have a top, center, and bottom. With R2R, the
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I also imagine the QDSC become obsolete 2 ways, with neither having to do with the cells actual estimated lifetime guarantee. They would be replaced far sooner due to -
1. the increase in QD efficiency necessitating upgrades for economic or competitive reasons and/or
2. QDSC become almost a commodity and the decreasing cost of new QDSC becomes so low that payback is quite fast with a low initial payment. .