本實驗研究有機並四苯(Tetracene)及富勒烯(C60)製成半導體元件之界面電荷轉移磁電導效應。並四苯材料中本身具有強烈的單重態激子裂變機制(Singlet fission)，此裂變機制會因磁場的改變反應到磁電導效應中。當富勒烯加入到元件中時，發現原本的磁電導效應產生極大改變使磁電導效應趨勢大幅改變，我們預測此變化為並四苯-富勒烯兩材料界面處產生電荷轉移所致。從實驗中驗證，當在並四苯與富勒烯半導體元件中間加入一層阻擋層，阻擋電荷轉移發生，可以研究並驗證出單重態激子裂變機制與並四苯-富勒烯界面產生的電荷轉移(Charge transfer complex)是一個彼此競爭的機制，兩種機制都有對應的磁電導效應並在多寡之間產生競爭的磁電導效應。最後也透過經驗公式的模擬及光致發光的磁效應兩個實驗來進一步佐證我們所提出解釋磁電導趨勢改變之理論的確定性。

The purpose of this thesis is to investigate magneto-conductance (MC) mechanism under illumination between tetracene organic diodes and tetracene/C60 organic diodes. Modulating by the magnetic field in the tetracene organic diodes can further make sure the Singlet Fission (SF) mechanism in the tetracene active layer. However,when we deposit the fullerene (C60) on the tetracene active layer to become a planar heterojunction diodes. We investigate the magneto-conductance (MC) response will be varied. The MC response will turn into M shape,because of the Charge Transfer (CT) mechaism at tetracene/C60 interfaces dominate the photocurrent in the organic heterojunction diodes. Our investigation demonstrate these influence by depositing C60 will compete with the magneto-conductance related to singlet fission.

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