本論文主要研究改變電極介面對磁電導效應之影響。由於有機磁電導效應來源主要與激發態有關，而電極介面會影響元件內部激發態，因此，我們使用了LiF/Al、BCP/Al、Ca/Al，三種具有不同特性之電極介面來製作元件，且發現五環素(Pentacene)與紅螢烯(Rubrene)兩者磁電導特性相似，但其磁電導機制來源截然不同，而改變電極介面只能影響MC ratio大小。接著我們摻雜C60，發現只有Pentacene元件中會產生CT Complex，而改變電極介面除了會影響內建電場大小以及電荷傳遞及收集外，也會影響激發態之exchange energy，進而改變磁電導曲線寬窄，但並不會對磁電導來源機制有太大之影響。

We have investigated the effect of electrode interface to the magneto conductance (MC) responses in the conjugated molecules diodes. Since Magnetic-field effects (MFEs) are came frome excited state of organic material, and excited state will be affect by different electrodes. Thus, we use three kinds of electrode interfaces to manufacture our devices. We found that both Pentacene and Rubrene device shows the similar MC response, but they are come from different mechanisms. In addition, change electrode interface only affect the MC ratio magnitude. Furthermore, we doping C60 to our devices and found that CT complex only appear at Pentacene device. Change electrode interface. In addition to change the built-in potential of device, the exchange energy of excited state will be affected too. As a result, the MC magnitude and width will be affected by different electrode interfaces.

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