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首页> 外文期刊>ACS applied materials & interfaces >Magneto-Electroluminescence Study of Fringe Field in 'Magnetic' Organic Light-Emitting Diodes
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Magneto-Electroluminescence Study of Fringe Field in 'Magnetic' Organic Light-Emitting Diodes

机译：“磁性”有机发光二极管中边缘场的磁电致发光研究

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摘要

Magneto-electroluminescence (MEL) represents the electroluminescence intensity change upon application of an external magnetic field. We show that the MEL field response in "magnetic" organic light-emitting diodes, where one electrode is ferromagnetic (FM), is a powerful technique for measuring the induced fringe field, B-F, from the FM electrode in the organic layer. We found that the in-plane fringe field, (B) over right arrow (F parallel to), from 3 nm Co and Ni80Fe20 FM electrodes is proportional to the applied field, (B) over right arrow (parallel to). The fringe field of the 3 nm Ni80Fe20 film was also investigated for an applied out-of-plane magnetic field, (B) over right arrow (perpendicular to). We found that the out-of-plane fringe field has two components: a component that is parallel or antiparallel to (B) over right arrow (perpendicular to) and remains unchanged with the distance, d, from the FM electrode and the other component that is highly inhomogeneous, parallel to the surface, and steeply decreases with d. We show that the obtained (B) over right arrow (F) is independent of the underlying mechanism for the MEL(B) response and thus may be considered universal.
机译：磁 - 电致发光（MEL）代表在外部磁场施加时的电致发光强度变化。我们表明，一个电极是铁磁性（FM）的“磁性”有机发光二极管中的Mel场响应是用于测量诱导的边缘场B-F的强大技术，从有机层中从FM电极测量诱导的边缘场。我们发现，从3nm co和ni80fe20 fm电极从3nm co和ni80fe20 fm电极对右箭头（f并联的平行箭头（f）成比例，（b）右箭头（平行于）。还研究了3nM Ni80Fe20膜的条纹场，用于施加的外平面磁场，（b）右箭头（垂直于）。我们发现，平面外边缘场有两个部件：一个平行或反平行于右箭头（垂直于）的部件（B）并与来自FM电极和其他部件的距离不变保持不变这是高度不均匀的，平行于表面，并且随着d急剧减少。我们表明，在右箭头（f）上获得的（b）独立于MEL（b）响应的潜在机制，因此可能被认为是普遍的。

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