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Wide Field Magnetic Luminescence Imaging

机译：宽场磁致发光成像

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摘要

This study demonstrates how magnetic-field-dependent luminescence from organic films can be used to image the magnetic configuration of an underlying sample. The organic semiconductors tetracene and rubrene exhibit singlet exciton fission, which is a process sensitive to magnetic fields. Here, thin films of these materials were characterized using photoluminescence spectrometry, atomic force microscopy, and photoluminescence magnetometry. The luminescence from these substrate-bound thin films is imaged to reveal the magnetic configuration of underlying Nd-Fe-B magnets. The tendency of rubrene to form amorphous films and produce large changes in photoluminescence under an applied magnetic field makes it more appropriate for magnetic field imaging than tetracene. This demonstration can be extended in the future to allow simple microscopic imaging of magnetic structure.
机译：这项研究证明了如何利用有机薄膜的磁场相关发光来成像基础样品的磁性结构。有机半导体并四苯和红荧烯表现出单重态激子裂变，这是对磁场敏感的过程。在此，使用光致发光光谱法，原子力显微镜和光致发光磁法对这些材料的薄膜进行表征。对这些与基片结合的薄膜的发光进行成像，以揭示下面的Nd-Fe-B磁体的磁性结构。在施加磁场下，红荧烯趋于形成非晶膜并在光致发光中产生较大变化的趋势使其比并四苯更适合于磁场成像。该演示可以在将来扩展，以允许对磁性结构进行简单的显微成像。

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