溶液法处理对活性层形貌影响的研究

来源 :2016第二届有机光电材料与器件国际会议 | 被引量 : 0次 | 上传用户:liu_mi
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  :添加剂DIO 已被认为是一种有效可靠且适用面较为广泛的活性层形貌优化手段,在公开发表的很多工作中都采用了这一工艺手段。最近,研究发现添加剂DIO 对活性层形貌相分离和垂直方向上的分布的作用是相悖的,即DIO 掺杂有利于形成较小尺寸的相分离,促进激子解离,同时却会使得给体材料向低功函数的阴极扩散,损害电荷传输。针对上述问题,我们提出了溶液法处理含有DIO 添加剂的活性层表面的方法来改善这种DIO 掺杂对活性层形貌相分离和给受体材料垂直分布上的相悖的作用。首先,利用飞行时间二次离子质谱法证明了溶液法处理掺有DIO 添加剂的活性层表面有利于改善给受体材料在垂直方向的分布,此外,研究发现溶液法处理掺有DIO 添加剂的活性层表面后形成了梯度三维体异质结结构。
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