Crystalline poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) nanofibrils with an electrical conductivity of 4380 S cm-1 are formed via a solution process using H2SO4. The concentrated H2SO4 treatment induces significant structural rearrangement the PEDOT:PSS charge-separated transition mechanism, resulting in highly ordered and densely packed nanofibrils. electrode shows sheet resistance 46 Ω sq-1 90% optical transmittance. As service to our authors readers, this journal...

A novel transfer-printing method for high-performance all-plastic transparent electrodes is demonstrated. solution process using H2SO4 not only dramatically enhances the electrical conductivity of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) over 4000 S cm−1 but also chemically modifies its adhesion properties, thereby enabling expeditious "pick-and-place" transfer onto arbitrary surfaces elastomeric stamps. Flexible and optoelectronic devices with transferred...

Stretchable conductive materials have received great attention owing to their potential for realizing next-generation stretchable electronics. However, the simultaneous achievement of excellent mechanical stretchability and high electrical conductivity as well cost-effective fabrication has been a significant challenge. Here, we report highly conducting polymer that was obtained by incorporating an ionic liquid. When 1-ethyl-3-methylimidazolium tetracyanoborate (EMIM TCB) added aqueous...

Abstract The rapid growth of wearables has created a demand for lightweight, elastic and conformal energy harvesting storage devices. conducting polymer poly(3,4-ethylenedioxythiophene) shown great promise thermoelectric generators, however, the thick layers pristine required effective are too hard brittle seamless integration into wearables. Poly(3,4-ethylenedioxythiophene)-elastomer composites have been developed to improve its mechanical properties, although so far without simultaneously...

The molecular ordering of aqueous conducting polymers is controlled using a rational method. By introducing various ionic liquids, which have designed electrostatic interactions to PEDOT:PSS solutions, the evolution PEDOT manipulated. Consequently, highly ordered nanostructures are achieved with reduced π–π stacking distance ≈3.38 Å and, thus, maximum σdc ≈2100 S cm–1. As service our authors and readers, this journal provides supporting information supplied by authors. Such materials peer...

Abstract With the advent of flexible and wearable electronics sensors, there is an urgent need to develop energy‐harvesting solutions that are compatible with such wearables. However, many proposed lack necessary mechanical properties, which make them susceptible damage by repetitive continuous stresses, leading serious degradation in device performance. Developing new energy materials possess high deformability self‐healability essential realize self‐powered devices. Herein, a...

A new tandem architecture for printable photovoltaics using a versatile organic nanocomposite containing photoactive and interfacial materials is demonstrated. The forms an ideal self-organized recombination layer via spontaneous vertical phase separation, which yields simplified structure fabricated with only four component layers high efficiency of 10.8%.

Thermoelectric (TE) generators that are capable of providing sustainable energy conversion under dynamic mechanical stresses have been explored for realizing autonomous wearable electronics. However, finding extremely deformable, efficient, and air-stable TE materials is still a major challenge. Here, we report highly stretchable efficient organic from aqueous composites poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) ionic liquids (ILs). In this composite, ILs...

The gelation of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has gained popularity for its potential applications in three dimensions, while possessing tissue-like mechanical properties, high conductivity, and biocompatibility. However, the fabrication arbitrary structures, especially via inkjet printing, is challenging because inherent gel formation. Here, microreactive printing (MRIJP) utilized to pattern various 2D 3D structures PEDOT:PSS/IL hydrogel by in-air...

Despite the high expectation of deformable and see-through displays for future ubiquitous society, current light-emitting diodes (LEDs) fail to meet desired mechanical optical properties, mainly because fragile transparent conducting oxides opaque metal electrodes. Here, by introducing a highly conductive nanofibrillated polymer (CP) as both anode cathode, ultraflexible LEDs (PLEDs) are demonstrated. The CP-based PLEDs exhibit outstanding dual-side light-outcoupling performance with...

Metal-dielectric nanolaminates represent a class of hyperbolic metamaterials with uniaxial permittivity tensor. In this study, we critically compare extraction nanolaminate samples using two techniques: polarized reflectometry vs. spectroscopic anisotropic ellipsometry. Both Au/MgF2 and Ag/MgF2 metal-dielectric stacks are examined. We demonstrate the applicability treatment multilayered material as medium derived optical parameters to those expected from effective approximation. also...

Realizing industrial-scale, large-area photovoltaic modules without any considerable performance losses compared with the of laboratory-scale, small-area perovskite solar cells (PSCs) has been a challenge for practical applications PSCs. Highly sophisticated patterning processes achieving series connections, typically fabricated using printing or laser-scribing techniques, cause unexpected efficiency drops and require complicated manufacturing processes. We successfully high-efficiency, PSC...

Reactive inkjet printing holds great prospect as a multimaterial fabrication process because of its unique advantages involving customization, miniaturization, and precise control droplets for patterning. For hydrogel structures, precursor (or cross-linker) is printed onto cross-linker precursor) bath or substrate. However, the progress patterning design intricate structures using technique limited by erratic interplay between gelation motion control. Accordingly, microreactive (MRIJP) was...

Vertically self-assembled bilayers with an interfacial bottom layer and a photoactive top are demonstrated via single coating step of blend composed amine-containing nonconjugated polyelectrolyte (NPE) organic electron donor–acceptor bulk heterojunction composite. The NPE reduces the work function indium tin oxide (ITO) cathode, which leads to efficient inverted solar cells without any additional interface engineering ITO.

Recently, the most efficient tandem polymer solar cells (PSCs) have used poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as a p-type component of recombination layer (RL). However, its undesirable acidic nature, originating from insulating PSS, PEDOT:PSS drastically reduces lifetime PSCs. Here, we demonstrate and stable PSCs by introducing acid-free self-doped conducting (SCP), combined with zinc oxide nanoparticles (ZnO NPs), RL for PEDOT:PSS-free Moreover, introduce an...

Two new expanded porphyrins, naphthorubyrin and naphthosapphyrin, were synthesized. The π-extended rubyrin was isolated structurally characterized in its monoprotonated form. sapphyrin congener undergoes pyrrole inversion as a function of the protonation state. These conformational effects are reflected spectroscopic features, including excited singlet state lifetimes.

Abstract The collection efficiency of photogenerated charges in polymer solar cells (PSCs) is strongly influenced by the built‐in field ( E ) that develops across photoactive materials. Here, investigating ‐development regimes PSCs introducing two types interlayers, electric dipole layers (EDLs) and charge transport (CTLs), device architecture optimized to result a larger . By incorporating pair EDLs on both sides layer, modulated shifting vacuum energy at each metal–semiconductor interface,...

Abstract Conducting polymers (CPs) constitute a promising building block to establish next‐generation stretchable electronics. However, achieving CPs with both high electrical conductivity and outstanding mechanical stretchability beyond flexibility is still major challenge. Therefore, understanding the key factors controlling such characteristics of required. Herein, method simultaneously manipulate properties representative CP, PEDOT:PSS, by modifying ionic liquid (IL) additives reported....

Carbon nanotubes (CNTs) have drawn great attention as promising candidates for realizing next-generation printed thermoelectrics (TEs). However, the dispersion instability and resulting poor printability of CNTs been major issues their practical processing device applications. In this work, we investigated TE characteristics water-processable carboxymethyl cellulose (CMC) single-walled CNT (SWCNT) composite. The microscopic analyses indicated that CMC-incorporated SWCNT dispersions produced...

The crystalline nanostructure of intrinsically conducting polymers is formed via an all-solution process, leading to a highly state. H2SO4 post-treatment induces significant structural rearrangement in PEDOT:PSS films, developing nanofibrils with stoichiometrically optimal amount PSS, and this dramatically increases conductivity up σdc ≈ 4380 S cm−1. conductive exhibits potential as transparent electrode printable optoelectronic devices, described by K. Lee, S. H. co-workers on page 2268.