Home

Person

Frank Nüesch

This person has left EPFL

About
Privacy
Disclaimer

Graph Chatbot

Related publications (85)

Page 1 of 5

Dielectric properties of 3-3 flexible composites by infiltration of elastomers into porous ceramic structures using cellulose scaffold

Frank Nüesch, Thomas Geiger

Elastomer composites are prepared by infiltrating polydimethylsiloxane (PDMS) into a porous ceramic structure of nanoparticles. This method differs from the conventional approach, where particles are dispersed into the polymer matrix, since here, the polym ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Traps for Electrons and Holes Limit the Efficiency and Durability of Polymer Light-Emitting Electrochemical Cells

Frank Nüesch, Wei-Hsu Hu, Camilla Arietta Vael-Garn

Polymer light-emitting electrochemical cells (PLECs) and light-emitting diodes (PLEDs) receive interest for large-area lighting and signage applications. During operation of a PLEC, a p-i-n junction develops where electrons and holes are injected into the ...

2022

Scrutinizing thermally stimulated current transients originating from trapped charges in organic semiconductors: A drift-diffusion study

Frank Nüesch

Thermally stimulated current (TSC) is a widely used technique to assess trap states and extract their density, energy, and capture rate using analytical expressions. In many cases, the latter are derived from physical models pertaining to inorganic semicon ...

AIP Publishing2022

Stress effects on the impedance and ferroelectricity of PVDF-BiFeO3-MWCNT films using xanthan gum as dispersant

Frank Nüesch, Francis Owusu

Composite films based on dispersions of bismuth ferrite (BiFeO3) in polyvinylidene fluoride (PVDF) matrixes were prepared in the presence of multiwalled-carbon-nanotubes (MWCNT), using xanthan gum (XG) as dispersant. Films were prepared by spin coating and ...

ELSEVIER SCIENCE SA2022

Conductive silicone elastomers electrodes processable by screen printing

Frank Nüesch, Jose Enrico Quijano Quinsaat

Conductive inks consisting of graphene and carbon black conductive fillers into a polydimethylsiloxane (PDMS) matrix, which can be processed into thin films by screen printing are developed. The influence of filler composition and content on mechanical and ...

Nature Research2019

High-Permittivity Polysiloxanes for Bright, Stretchable Electroluminescent Devices

Frank Nüesch, Wei-Hsu Hu

Stretchable alternating current electroluminescent (ACEL) devices have a bright future in wearable electronics and soft robotics. Still, their market application is hindered by high operating voltages. The voltage can be reduced by increasing the relative ...

Wiley-V C H Verlag Gmbh2024

Near-infrared absorbing cyanine dyes for all-organic optical upconversion devices

Frank Nüesch, Matthias Diethelm

The development of near-infrared (NIR) photodetection technologies is driven by emerging applications such as medical imaging or optical sensors for electronic displays and machine vision. An all-organic upconverter (OUD) is a device that converts incident ...

2019

Indium and Silver Recovery from Perovskite Thin Film Solar Cell Waste by Means of Nanofiltration

Frank Nüesch, Meret Amrein

Due to minimal material use and low-cost processing, next-generation thin film solar cells represent a promising alternative to traditional crystalline silicon solar cells. Among these, metal-halide perovskite solar cells have seen significant improvements ...

American Chemical Society (ACS)2025

MXene Inks for High-Throughput Printing of Electronics

Frank Nüesch, Mohammad Jafarpour

MXene inks are promising alternatives for conventional conductive inks in printing electronics. However, the formulation of MXene inks is challenging due to the physicochemical properties of the few solvents in which MXenes can be dispersed. Furthermore, c ...

Wiley2024

Interface modification to optimize charge separation in cyanine heterojunction photovoltaic devices

Frank Nüesch, Libero Zuppiroli, Grégory Tornare

We investigate heterojunction photovoltaic devices using the carbocyanine 1,1'-diethyl-3,3,3',3'-tetramethylcarbocyanine perchlorate (Cy5) as donor and buckminsterfullerene (C60) as acceptor. We find that photocurrent generation occurs at the in ...

Elsevier2005

Cyanine platelet single crystals: growth, crystal structure and optical spectra

Frank Nüesch, Jakob Heier, Antonia Neels

Crystalline organic semiconducting materials are much in demand for multiple electronic and optoelectronic device applications. Here, solution grown ultrathin rhombic crystals of a trimethine carbocyanine anionic dye are used to establish relationships bet ...

Royal Society of Chemistry2018

Transport and recombination in organic light-emitting diodes studied by electrically detected magnetic resonance

Frank Nüesch, Libero Zuppiroli

We have used electrically detected magnetic resonance (EDMR) to study a series of multilayer organic devices based on aluminum (III) 8-hydroxyquinoline (Alq3). These devices were designed to identify the microscopic origin of different spin-depe ...

2005

Spin dependent transport and recombination in organic light-emitting diodes

Frank Nüesch, Libero Zuppiroli

Electrically detected magnetic resonance (EDMR) was used to study a series of multilayer organic devices based on aluminum (III) 8-hydroxyquinoline (Alq3). These devices were designed to identify the microscopic origin of different spin dependen ...

Wiley-VCH2005

Solution-Processed Organic Optical Upconversion Device

Frank Nüesch, Matthias Diethelm, Santhanu Panikar Ramanandan, Sina Abdolhosseinzadeh

Imaging in the near-infrared (NIR) is getting increasingly important for applications such as machine vision or medical imaging. NIR-to-visible optical upconverters consist of a monolithic stack of a NIR photodetector and a visible light-emitting unit. Suc ...

AMER CHEMICAL SOC2019

Electron Trap Dynamics in Polymer Light-Emitting Diodes

Frank Nüesch, Matthias Diethelm, Wei-Hsu Hu

Semiconducting polymers are being studied intensively for optoelectronic device applications, including solution-processed light-emitting diodes (PLEDs). Charge traps in polymers limit the charge transport and thus the PLED efficiency. It is firmly establi ...

WILEY-V C H VERLAG GMBH2022

Critical role of H-aggregation for high-efficiency photoinduced charge generation in pristine pentamethine cyanine salts

Jacques-Edouard Moser, Frank Nüesch, George Cameron Fish, Juan Manuel Moreno Naranjo

The mechanism of photoinduced symmetry-breaking charge separation in solid cyanine salts at the base of organic photovoltaic and optoelectronic devices is still debated. Here, we employ femtosecond transient absorption spectroscopy (TAS) to monitor the cha ...

2021

Squaraine Dyes for Organic Photomultiplication Photodetectors with 220% External Quantum Efficiency at 1240 nm

João Pedro Ferreira Assunção, Frank Nüesch, Elodie Didier

Near-infrared (NIR) light detection at wavelengths lambda > 1100 nm is essential in modern science and technology. Emerging organic semiconductors are promising for solution-processed, flexible, and large-area NIR organic photodetectors (OPDs), but only a ...

WILEY2025

Squaraine Dyes for Single-Component Shortwave Infrared-Sensitive Photodiodes and Upconversion Photodetectors

Frank Nüesch, Mohammad Jafarpour, Wei-Hsu Hu

Sensitive detection of shortwave infrared (SWIR) light using organic dyes will be a significant advance toward many applications in industry and research. Furthermore, from a fabrication and optimization view, photogeneration of charges in diodes consistin ...

2023

Exciton Dynamics and Effects of Structural Order in Morphology-Controlled J-Aggregate Assemblies

Frank Nüesch, Jakob Heier, Surendra Babu Anantharaman

Narrow-band photoluminescence (PL) together with high quantum efficiency from organic molecules is essential for high-color-purity emitters. Supramolecular assemblies like J-aggregates are promising materials due to their narrow PL signal with full-width a ...

2019

Micro-Cup Architecture for Printing and Coating Asymmetric 2d-Material-Based Solid-State Supercapacitors

Frank Nüesch, René Uwe Schneider, Mohammad Jafarpour

High energy density micro-supercapacitors (MSCs) are in high demand for miniaturized electronics and microsystems. Research efforts today focus on materials development, applied in the planar interdigitated, symmetric electrode architecture. A novel "cup & ...

2023