Highly Conductive PEDOT:PSS Electrode with Optimized Solvent and Thermal Post-Treatment for ITO-Free Organic Solar Cells

被引：1287
作者：
Kim, Yong Hyun [1 ]
Sachse, Christoph [1 ]
Machala, Michael L. [1 ]
May, Christian [2 ]
Mueller-Meskamp, Lars [1 ]
Leo, Karl [1 ,2 ]
机构：
[1] Tech Univ Dresden, Inst Angew Photophys, Dresdener Innovationszentrum Energieeffizienz, D-01062 Dresden, Germany
[2] Fraunhofer Inst Photon Mikrosyst, D-01109 Dresden, Germany
来源：
ADVANCED FUNCTIONAL MATERIALS | 2011年 / 21卷 / 06期
关键词：
SULFONATE) FILM; WORK FUNCTION; TRANSPARENT; STABILITY; EFFICIENT;
D O I：
10.1002/adfm.201002290
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films as stand-alone electrodes for organic solar cells have been optimized using a solvent post-treatment method. The treated PEDOT: PSS films show enhanced conductivities up to 1418 S cm(-1), accompanied by structural and chemical changes. The effect of the solvent treatment on PEDOT: PSS has been investigated in detail and is shown to cause a reduction of insulating PSS in the conductive polymer layer. Using these optimized electrodes, ITO-free, small molecule organic solar cells with a zinc phthalocyanine (ZnPc): fullerene C-60 bulk heterojunction have been produced on glass and PET substrates. The system was further improved by pre-heating the PEDOT: PSS electrodes, which enhanced the power conversion efficiency to the values obtained for solar cells on ITO electrodes. The results show that optimized PEDOT: PSS with solvent and thermal post-treatment can be a very promising electrode material for highly efficient flexible ITO-free organic solar cells.
引用
收藏
页码：1076 / 1081
页数：6
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