In 1958, Kearns and Calvin of the University of California, Berkeley embedded magnesium phthalocyanine dye in two<br> The first OPV battery was successfully prepared between electrodes with different work functions. Although this device can only produce 200<br> The voltage and energy conversion efficiency of mV are also very low, but it undoubtedly reveals the potential of organic semiconductor materials.<br> Force. [23] In the following twenty years, the development of OPV battery was very slow.
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