Highly Conductive PEDOT:PSS Nanofibrils Induced by Solution‐Processed Crystallization

The fabrication of electronic devices based on organic materials, known as ’printed electronics’, is an emerging technology due to its unprecedented advantages involving fl exibility, light weight, and portability, which will ultimately lead to future ubiquitous applications. [ 1 ] The solution processability of semiconducting and metallic polymers enables the cost-effective fabrication of optoelectronic devices via high-throughput printing techniques. [ 2 ] These techniques require high-performance fl exible and transparent electrodes (FTEs) fabricated on plastic substrates, but currently, they depend on indium tin oxide (ITO) coated on plastic substrates. However, its intrinsic mechanical brittleness and inferior physical properties arising from lowtemperature ( T ) processing below the melting T of the plastic substrates (i.e., typically below 150 °C) have increased the demand for alternative FTE materials. [ 3 ]

[1]  Y. H. Kahng,et al.  Role of interchain coupling in the metallic state of conducting polymers. , 2012, Physical review letters.

[2]  Alexis Laforgue,et al.  Production of Conductive PEDOT Nanofibers by the Combination of Electrospinning and Vapor-Phase Polymerization , 2010 .

[3]  K. Ho,et al.  Highly conductive PEDOT:PSS electrode by simple film treatment with methanol for ITO-free polymer solar cells , 2012 .

[4]  Jianyong Ouyang,et al.  Salt-Induced Charge Screening and Significant Conductivity Enhancement of Conducting Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) , 2009 .

[5]  Daewoo Ihm,et al.  Self‐Assembly and Crystalline Growth of Poly(3,4‐ethylenedioxythiophene) Nanofilms , 2007 .

[6]  M. Ratner,et al.  Bithiopheneimide-dithienosilole/dithienogermole copolymers for efficient solar cells: information from structure-property-device performance correlations and comparison to thieno[3,4-c]pyrrole-4,6-dione analogues. , 2012, Journal of the American Chemical Society.

[7]  Stephen R. Forrest,et al.  The path to ubiquitous and low-cost organic electronic appliances on plastic , 2004, Nature.

[8]  N. S. Murthy,et al.  General procedure for evaluating amorphous scattering and crystallinity from X-ray diffraction scans of semicrystalline polymers , 1990 .

[9]  A. Heeger.  Nobel Lecture: Semiconducting and metallic polymers: The fourth generation of polymeric materials* , 2001 .

[10]  K. Ellmer.  Past achievements and future challenges in the development of optically transparent electrodes , 2012, Nature Photonics.

[11]  R. Gillespie,et al.  THE RAMAN SPECTRA OF SULPHURIC, DEUTEROSULPHURIC, FLUOROSULPHURIC, CHLOROSULPHURIC, AND METHANESULPHONIC ACIDS AND THEIR ANIONS , 1962 .

[12]  Yang Yang,et al.  On the mechanism of conductivity enhancement in poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) film through solvent treatment , 2004 .

[13]  Jianyong Ouyang,et al.  Solution‐Processed Metallic Conducting Polymer Films as Transparent Electrode of Optoelectronic Devices , 2012, Advanced materials.

[14]  L. Pettersson,et al.  Structure of thin films of poly(3,4-ethylenedioxythiophene) , 1999 .

[15]  Zhenan Bao,et al.  Highly Conductive and Transparent PEDOT:PSS Films with a Fluorosurfactant for Stretchable and Flexible Transparent Electrodes , 2012 .

[16]  Jaegab Lee,et al.  Effects of iron(III) p-toluenesulfonate hexahydrate oxidant on the growth of conductive poly(3,4-eth , 2011 .

[17]  J. Reynolds,et al.  Poly(3,4‐ethylenedioxythiophene) and Its Derivatives: Past, Present, and Future , 2000 .

[18]  Gordon G. Wallace,et al.  Polymeric material with metal-like conductivity for next generation organic electronic devices , 2012 .

[19]  Udo Lang,et al.  Microscopical Investigations of PEDOT:PSS Thin Films , 2009 .

[20]  Jean-Luc Brédas,et al.  Electronic evolution of poly(3,4-ethylenedioxythiophene) (PEDOT): from the isolated chain to the pristine and heavily doped crystals. , 2008, Journal of the American Chemical Society.

[21]  David C. Paine,et al.  Applications and Processing of Transparent Conducting Oxides , 2000 .

[22]  Olle Inganäs,et al.  Organic photovoltaics: Avoiding indium , 2011 .

[23]  Olle Inganäs,et al.  Optical anisotropy in thin films of poly(3,4-ethylenedioxythiophene)–poly(4-styrenesulfonate) , 2002 .

[24]  W. R. Salaneck,et al.  Electrochemical and XPS studies toward the role of monomeric and polymeric sulfonate counterions in the synthesis, composition, and properties of poly(3,4-ethylenedioxythiophene) , 2003 .