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Very high magnetocurrent in tris-(8-hydroxyquinoline) aluminum-based bipolar charge injection devices
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Bipolar devices constructed using thick tris-(8-hydroxyquinoline) aluminum thin films sandwiched between a thick sulfonated polyaniline hole-injection electrode and electron-injection electrode show very high (up to ) magnetocurrent values. True-hole-only and true-electron-only -based devices that make use of Si as charge carrier collecting electrode, and as electron injecting electrode or Au as hole injecting electrode, are also proposed, prepared, and characterized. In these true-single-carrier devices magnetocurrent is not observed. This result provides strong evidence that bipolar injection is a necessary condition for very high magnetocurrent observation in .
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