CAJ | 학술논문

有机电致发光器件的磁电导效应，是指在恒定外加偏压下，对于不含有任何磁性材料功能层的有机电致发光器件，通过器件的电流发生变化的现象。由于器件对外磁场很敏感，通过给器件施加偏压，如果有外磁场的存在，器件的电流会有较显著地改变，通过与事先测定好的B- I特性曲线对比，便能测定外加磁场的大小。因此利用这种效应可以制成磁场传感器等新型实用器件。有机电致发光器件中存在复杂的激发态及自旋弛豫过程，充分了解这些复杂的物理机制有助于开发更加高效的器件，而磁场会对以上物理过程产生作用，因此是一种很好的研究有机电致发光机制的工具。故这种研究具有较大的科学价值和社会应用前景。文中将从有机电致发光器件磁电导效应的研究背景、发展现状及存在问题等几个方面做详细的论述，并探讨磁电导效应产生的可能微观机制，并对未来的研究方向做进一步的展望。
유궤전치발광기건적자전도효응，시지재항정외가편압하，대우불함유임하자성재료공능층적유궤전치발광기건，통과기건적전류발생변화적현상。유우기건대외자장흔민감，통과급기건시가편압，여과유외자장적존재，기건적전류회유교현저지개변，통과여사선측정호적B- I특성곡선대비，편능측정외가자장적대소。인차이용저충효응가이제성자장전감기등신형실용기건。유궤전치발광기건중존재복잡적격발태급자선이예과정，충분료해저사복잡적물리궤제유조우개발경가고효적기건，이자장회대이상물리과정산생작용，인차시일충흔호적연구유궤전치발광궤제적공구。고저충연구구유교대적과학개치화사회응용전경。문중장종유궤전치발광기건자전도효응적연구배경、발전현상급존재문제등궤개방면주상세적논술，병탐토자전도효응산생적가능미관궤제，병대미래적연구방향주진일보적전망。
The magneto-conductance effect is used to describe the changes of the current of the OLED (organic light-emitting diode), whose organic functional layer has no ferromagnetic material. In the presence of external magnetic field, the current in the device would be changed significantly since the diode is sensitive to the magnetic field. The magnitude of the magnetic field could be got through comparing the value of current with the curve of B- I which was measured and stored in the computer. Therefore, this special effect could be used to produce the new type of sensor of magnetic field. If the complex excited state and the process of spin relaxation in the OLED could be studied thoroughly, the new luminescence materials could be synthesized and the new structure could be designed which can help us improve the performances of OLED. Furthermore, the magnetic field can have a significant influence on the excited state process in the diode which can be a tool to study the underlying mechanisms of OLED. Up to now, the tremendous progress has been made in the field of magneto-conductance effect. This article summarized the background, progress, the major achievement and the possible microscopic mechanism in the field of magneto-conductance effect. In addition, the prospect in the field of magneto-conductance effect has been made.