氧化铟锡/聚[2-甲氧基-5-(2'-乙基己氧基)-1,4-苯撑乙烯]:聚环氧乙烷:双(三氟甲基磺酰)亚胺锂/铝聚合物发光电化学电池中的磁电致发光

Magneto-Electroluminescence in ITO/MEH-PPV:PEO:LiCFSO/Al Polymer Light-Emitting Electrochemical Cells.

作者信息

Zhu Mingpeng, Yuan Xueting, Ni Gang

机构信息

Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.

Shanghai Engineering Research Center for Ultra-Precision Optical Manufacturing, Fudan University, Shanghai 200433, China.

出版信息

Micromachines (Basel). 2019 Aug 17;10(8):546. doi: 10.3390/mi10080546.

DOI:10.3390/mi10080546

PMID:31426537

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6723417/

Abstract

Magnetic field effects (MFE) have been extensively studied in organic light emitting diodes because of their potential application in organic spintronics devices. However, only a few studies on MFE in organic light-emitting electrochemical cells (LEC) have been reported. In this paper, magnetic field effects on the electroluminescence of an LEC device with the structure of ITO/MEH-PPV:PEO:LiCFSO/Al were studied at various temperatures. The luminance-current-voltage curves of the device shows the typical bi-polar characteristics of LECs; positive magnetic electroluminescence (MEL) was observed with a value of about 2.5% (B = 42 mT, 250 K), showing a Lorentzian line shape. With a decrease in temperature, the MEL value and the threshold voltage increased accordingly, below the possible mechanism is discussed.

摘要

由于磁场效应（MFE）在有机自旋电子器件中的潜在应用，其在有机发光二极管中已得到广泛研究。然而，关于有机发光电化学电池（LEC）中MFE的研究报道却很少。本文研究了在不同温度下，磁场对具有ITO/MEH-PPV:PEO:LiCFSO/Al结构的LEC器件电致发光的影响。该器件的亮度-电流-电压曲线呈现出LEC典型的双极特性；观察到正向磁电致发光（MEL），其值约为2.5%（B = 42 mT，250 K），呈现出洛伦兹线型。随着温度降低，MEL值和阈值电压相应增加，下面讨论其可能的机制。