CAJ | 학술논문

有机电致发光器件(Organic Light-Emitting Device，OLED)已成为当今最热门的研究领域之一。以钛酸锶(100)作为基底，采用RF磁控溅射镀膜系统制成磁性电极La1-xSrxMnO3(LSMO)薄膜，为了增加钛酸锶基底LSMO薄膜的透光率，对该基底进行了双面光学抛光。在此基础上，以LSMO为衬底，制作了结构为LSMO/NPB/Alq3/CsF/Mg：Ag的有机电致发光器件。器件大约在14 V时启亮，在25 V时，器件达到最大亮度。在磁场作用下，研究了器件的亮度-电压-电流特性。在大约150 mT磁场下，器件的发光亮度增大10%。研究结果表明：由于经LSMO注入发光层内部的电子和空穴自旋方向被部分极化，发光层单线态与三线态激子的形成比率增加。由于发光材料Alq3是单线态有机材料，因而，器件发光亮度增大。
유궤전치발광기건(Organic Light-Emitting Device，OLED)이성위당금최열문적연구영역지일。이태산송(100)작위기저，채용RF자공천사도막계통제성자성전겁La1-xSrxMnO3(LSMO)박막，위료증가태산송기저LSMO박막적투광솔，대해기저진행료쌍면광학포광。재차기출상，이LSMO위츤저，제작료결구위LSMO/NPB/Alq3/CsF/Mg：Ag적유궤전치발광기건。기건대약재14 V시계량，재25 V시，기건체도최대량도。재자장작용하，연구료기건적량도-전압-전류특성。재대약150 mT자장하，기건적발광량도증대10%。연구결과표명：유우경LSMO주입발광층내부적전자화공혈자선방향피부분겁화，발광층단선태여삼선태격자적형성비솔증가。유우발광재료Alq3시단선태유궤재료，인이，기건발광량도증대。
Organic Light Emitting Device(OLED) has been a promising new research area that has received a lot of attention in the recent. In this paper,the OLED was fabricated using spin LSMO substrate. The electrode was made of La1-xSrxMnO3 (LSMO) thin films by RF magnetron sputtering with SrTiO3 (100) substrate. In order to increase light transmittance ratio of LSMO film, the substrate was double-sided polished. The structure was LSMO/NPB/Alq3/CsF/Mg:Ag. Light was emitted at above 14 V. The brightness of device was the most at 25 V. The characteristic brightness, voltage and current of these devices were investigated with the magnetic field. The brightness of device was improved 10% with 150 mT. The photovoltaic character was little affected by the magnetic field in the device using LSMO substrate. Thisphenomenon was related on the ratio of single exciton and triplet exciton in the emissive layer. it would then be possible to preferentially form triplets or singlets by controlling the spin polarizations of the injected carriers. As Alq3 belonged to singlet materials, the brightness of device was improved.