Need help, please explain
Question: Please explain the timeline for theconversion efficiency of the solar cell. From the beginning(day 1)until now, how much is the conversion efficiency? Whether it is 0%or 100%? The solar cell cannot be 100%, or else everyone will useit. Why is the solar cell still not being used?
Need help, please explain Question: Please explain the timeline for the conversion efficiency of the solar cell. From th
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