The role of triplet-doublet (T-D) quenching in the magnetoconductance (MC), at low temperature (30 K) and 1 V applied voltage, of an organic light emitting diode (OLED) is analysed thoroughly. This diode is based on an anthracene containing poly (p-phenylene-ethynylene)-alt-poly (p-phenylene-venylene) (PPE-PPV) named (AnE-PV stat) and shows a negative MC. The stochastic Liouville equation is applied to interpret the experimental results. We demonstrate that the evolution of the doublet character of the T-D pair states, as a function of the applied magnetic field, is behind the line shape of the MC. We also show that the T-D quenching probability $\left(P_q\right)$ has a maximum value when the doublet character (DC) is shared by the most T-D pair states. Through the best fitting of the experimental data, we determine the zero-field splitting (ZFS) parameters of the triplet exciton; $D_{zfs}=-1.9\times {10}^{-5}$ eV and $E_{zfs}=2\times {10}^{-8}$ eV. The dissociation rate $k_{-1}$ of a T-D pair and the recombination rate $k_2$ are in the vicinity of ${10}^6$ s⁻¹.

彻底分析了三重双态（TD）猝灭在有机发光二极管（OLED）的低温（30 K）和1 V施加电压下在磁导（MC）中的作用。该二极管是基于含有聚（蒽p -亚苯基亚乙炔基） - ALT -聚（p -亚苯基venylene）命名为（PPE-PPV）（ANE-PV STAT）和示出了负MC。应用随机的Liouville方程来解释实验结果。我们证明了TD对态的双峰态的演化（作为所施加磁场的函数）在MC的线形后面。我们还表明TD淬灭概率$（P_q）$当大多数TD对状态共享双峰字符（DC）时，最大值。通过对实验数据的最佳拟合，我们确定了三重态激子的零场分裂（ZFS）参数。$d_{žFs}=-1.9\times {10}^{-5}$ eV和 $E_{žFs}=\mathrm{2个}\times {10}^{-8}$eV。离解率${ķ}_{-\mathrm{1个}}$ TD对和重组率 ${ķ}_{\mathrm{2个}}$ 在附近 ${10}^6$s ^-1。