High-resolution imaging of electrochemical doping and dedoping processes in luminescent conjugated polymers

被引：53

作者：

Hu, YF ^{[1
]}

Tracy, C ^{[1
]}

Gao, J ^{[1
]}

机构：

[1] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 12期

关键词：

D O I：

10.1063/1.2187408

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report fluorescence imaging of extremely large planar polymer light-emitting electrochemical cells (LECs) with high spatial and temporal resolution. The type of cation used has been shown to strongly affect n-doping propagation. When left to relax, p doping undergoes significantly faster relaxation than n doping. Imaging also confirms that a p-n junction, rather than a p-i-n junction, is formed in fully turned on LECs, which suffer from heavy photoluminescence quenching throughout the polymer film. However, a p-i-n junction with a much less quenched "intrinsic" region can be formed by relaxing a p-n junction without bias, suggesting a simple approach for achieving more efficient LECs.

引用

页数：3

共 23 条

[1] Efficient, fast response light-emitting electrochemical cells: Electroluminescent and solid electrolyte polymers with interpenetrating network morphology [J].