How electrode work function affects doping and electroluminescence of polymer light-emitting electrochemical cells

被引:54
作者
Hohertz, Donna [1 ]
Gao, Jun [1 ]
机构
[1] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1002/adma.200800068
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The electrode composition strongly affects nearly every aspect of light-emitting electrochemical cell (LEC) operation. The electrode effect is explained in terms of the difference in electrode work function, which determines the efficiency of electronic charge injection at low doping levels. The results suggest that both the active layer and the electrodes should be considered and optimized in order to realize high-performance LECs.
引用
收藏
页码:3298 / +
页数:6
相关论文
共 20 条
[1]   The effect of annealing/quenching on the performance of polymer light-emitting electrochemical cells [J].
Alem, Salima ;
Gao, Jun .
ORGANIC ELECTRONICS, 2008, 9 (03) :347-354
[2]   LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].
BURROUGHES, JH ;
BRADLEY, DDC ;
BROWN, AR ;
MARKS, RN ;
MACKAY, K ;
FRIEND, RH ;
BURN, PL ;
HOLMES, AB .
NATURE, 1990, 347 (6293) :539-541
[3]   Electrochemiluminescence from organic emitters [J].
Dini, D .
CHEMISTRY OF MATERIALS, 2005, 17 (08) :1933-1945
[4]   Bringing light to solid-state electrolytes: The polymer light-emitting electrochemical cell [J].
Edman, L .
ELECTROCHIMICA ACTA, 2005, 50 (19) :3878-3885
[5]   Electroluminescence in conjugated polymers [J].
Friend, RH ;
Gymer, RW ;
Holmes, AB ;
Burroughes, JH ;
Marks, RN ;
Taliani, C ;
Bradley, DDC ;
Dos Santos, DA ;
Brédas, JL ;
Lögdlund, M ;
Salaneck, WR .
NATURE, 1999, 397 (6715) :121-128
[6]   Visualization of electrochemical doping and light-emitting junction formation in conjugated polymer films [J].
Gao, J ;
Dane, J .
APPLIED PHYSICS LETTERS, 2004, 84 (15) :2778-2780
[7]   Planar polymer light-emitting electrochemical cells with extremely large interelectrode spacing [J].
Gao, J ;
Dane, J .
APPLIED PHYSICS LETTERS, 2003, 83 (15) :3027-3029
[8]   High-resolution imaging of electrochemical doping and dedoping processes in luminescent conjugated polymers [J].
Hu, YF ;
Tracy, C ;
Gao, J .
APPLIED PHYSICS LETTERS, 2006, 88 (12)
[9]   Cationic effects in polymer light-emitting electrochemical cells [J].
Hu, Yufeng ;
Gao, Jun .
APPLIED PHYSICS LETTERS, 2006, 89 (25)
[10]   Polymer light-emitting electrochemical cells: A theoretical study of junction formation under steady-state conditions [J].
Manzanares, JA ;
Reiss, H ;
Heeger, AJ .
JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (22) :4327-4336