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Abstract The most prevalent among nervous system tumors significantly jeopardize patient health. For nerve integrity preservation after tumor removal, continuous intraoperative neurophysiological monitoring (CINM) is indispensable during microsurgery. The paper highlights the articles about the development of a system that employs soft and stretchable organic electronic materials for CINM. This innovative system harnesses soft and stretchable organic electronic materials and deploys conductive polymer electrodes with low impedance and modulus. These electrodes facilitate uninterrupted near‐field action potential recording during surgery, resulting in enhanced signal‐to‐noise ratios and reduced invasiveness. Additionally, the system's multiplexing capabilities enable precise nerve localization, even in the absence of anatomical landmarks.

Reported herein are solution-processed polymer anode electrodes for blue phosphorescent organic light-emitting diodes (PhOLEDs). The highly conductive anodes were made from 10-wt%-methyl-red-(MR)-doped poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) (PH1000) films. The red-colored and uniform polymer films demonstrated electrical conductivity values that significantly increased from 0.25 to 50 S·cm−1 after doping. The more than 200-fold enhancement in conductivity indicates that the doped films have a lower sheet resistance and better hole injection and transport properties than the pristine films. The resultant PhOLEDs based on the doped polymer anodes exhibited stable, broad, and intense blue emission at 468 nm with a 2616 cd·m−2 maximum luminance and a 4 V turn-on voltage. The obtained study results confirmed the effectiveness of the MR dye as a dopant for the significant enhancement of the conductivity and effective hole injection of PEDOT:PSS. Efficient future flexible optoelectronic applications can be built using this highly conductive polymer electrode obtained via a simple, solution-processed, and cost-effective doping approach.

Reported herein are solution-processed polymer anode electrodes for blue phosphorescent organic light-emitting diodes (PhOLEDs). The highly conductive anodes were made from 10-wt%-methyl-red-(MR)-doped poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) (PH1000) films. The red-colored and uniform polymer films demonstrated electrical conductivity values that significantly increased from 0.25 to 50 S·cm−1 after doping. The more than 200-fold enhancement in conductivity indicates that the doped films have a lower sheet resistance and better hole injection and transport properties than the pristine films. The resultant PhOLEDs based on the doped polymer anodes exhibited stable, broad, and intense blue emission at 468 nm with a 2616 cd·m−2 maximum luminance and a 4 V turn-on voltage. The obtained study results confirmed the effectiveness of the MR dye as a dopant for the significant enhancement of the conductivity and effective hole injection of PEDOT:PSS. Efficient future flexible optoelectronic applications can be built using this highly conductive polymer electrode obtained via a simple, solution-processed, and cost-effective doping approach. [ABSTRACT FROM AUTHOR]

[Display omitted] • Environmentally friendly and scalable method for the fabrication of large area electrodes. • Use of water-based cellulose derivatives solutions and large area techniques. • Realization of performing PEDOT:PSS electrodes on paper. • Method for the fabrication of wearable electrodes with improved electromechanical performances. Flexible electronics have become widespread in the last decades. Due to the environmental crisis that our planet is facing, the use of sustainable materials, and less time and energy-consuming methods for the fabrication of flexible and light weight devices, have become crucial. In this context, the present study proposes a low environmental impact and scalable method for producing large-area PEDOT:PSS electrodes on standard copy paper through its surface modification. Specifically, the paper substrate is treated (through blade-coating technique) with a cellulose-based polymeric coating to close its porousness and homogenize its surface prior to the deposition of the conductive material. This cellulose-based interface allows the subsequent effective deposition of the conductive PEDOT:PSS layer, achieving an improved electrode in terms of both conductive stability and electromechanical performance. The stability of the electrode was monitored over a six-month period, and the electrodes did not suffer any ageing effects, showing stable resistance values (within the experimental error). The electrodes fabricated on engineered paper display lower (−80 %) electrical resistance. They also showed increased breaking point during strain tests (17 ± 1 % vs 9 ± 1 %) and a minor increase in resistance after 1000 bending cycles (4 % vs 9 % increase). Thus, their increased performance, stability and reproducibility opens new possibilities for wearable electronic devices. [ABSTRACT FROM AUTHOR]

Conventional planar organic light-emitting diodes (OLEDs) suffer from poor light extraction due to the total internal reflection at the waveguided interfaces. Therefore, the development of efficient light extraction structures is of great necessity and significance to realize practical applications in large area and cost-effective light sources. In this paper, a high-performance internal light outcoupling system for white OLEDs with spontaneously formed metal oxide nanostructures is developed. The fabrication process of the outcoupling system is simple and can be scaled to large area manufacturing. The enhancement of external quantum efficiency in white OLEDs comprising the outcoupling system reaches a factor of 1.7, and it is further increased to 2.9 when a hemispherical lens is employed. Together with the improvement of light extraction, excellent color stability over broad viewing angles is achieved. [ABSTRACT FROM AUTHOR]