Department of Chemical Engineering, Princeton University, A215 Engineering Quadrangle, Princeton, NJ 08544, USA.
Proc Natl Acad Sci U S A. 2010 Mar 30;107(13):5712-7. doi: 10.1073/pnas.0913879107. Epub 2010 Mar 8.
Postdeposition solvent annealing of water-dispersible conducting polymers induces dramatic structural rearrangement and improves electrical conductivities by more than two orders of magnitude. We attain electrical conductivities in excess of 50 S/cm when polyaniline films are exposed to dichloroacetic acid. Subjecting commercially available poly(ethylene dioxythiophene) to the same treatment yields a conductivity as high as 250 S/cm. This process has enabled the wide incorporation of conducting polymers in organic electronics; conducting polymers that are not typically processable can now be deposited from solution and their conductivities subsequently enhanced to practical levels via a simple and straightforward solvent annealing process. The treated conducting polymers are thus promising alternatives for metals as source and drain electrodes in organic thin-film transistors as well as for transparent metal oxide conductors as anodes in organic solar cells and light-emitting diodes.
后沉积溶剂退火可诱导水分散性导电聚合物发生剧烈的结构重排，并使电导率提高两个数量级以上。当苯胺薄膜暴露于二氯乙酸中时，我们获得了超过 50 S/cm 的电导率。将市售的聚(3,4-乙烯二氧噻吩)进行相同的处理，可得到高达 250 S/cm 的电导率。该工艺使得导电聚合物在有机电子学中得到了广泛应用；现在，即使是原本不易加工的导电聚合物，也可以通过溶液沉积，并通过简单直接的溶剂退火工艺来提高其电导率，使其达到实用水平。因此，经过处理的导电聚合物有望替代金属，作为有机薄膜晶体管的源极和漏极，以及在有机太阳能电池和发光二极管中作为透明金属氧化物导体的阳极。
