A5094152135- Carbon Nanotubes in Composites
- Advanced Thermoelectric Materials and Devices
- Graphene research and applications
- Advancements in Battery Materials
- Organic Electronics and Photovoltaics
- Molecular Junctions and Nanostructures
- Advanced Sensor and Energy Harvesting Materials
- Fullerene Chemistry and Applications
- Thermal Radiation and Cooling Technologies
Heidelberg University
2024-2025
Semiconducting single-walled carbon nanotubes (SWCNTs) are a promising thermoelectric material with high power factors after chemical p- or n-doping. Understanding the impact of dopant counterions on charge transport and properties nanotube networks is essential to further optimize doping methods develop better dopants. This work utilizes ion-exchange systematically vary size in thin films small large diameter, polymer-sorted semiconducting SWCNTs AuCl
Abstract Networks of semiconducting single‐walled carbon nanotubes (SWNTs) are a promising material for thermoelectric energy harvesting due to their mechanical flexibility, solution processability, high Seebeck coefficients and electrical conductivities after chemical p‐ or n‐doping. Here, we demonstrate that proton‐coupled electron transfer (PCET) with benzoquinone (BQ) as the oxidant lithium bis(trifluoromethylsulfonyl)imide (Li[TFSI]) electrolyte counterions is highly suitable method...
Despite its comparatively low electron affinity, tris(pentafluorophenyl)borane (BCF) has been widely explored as an efficient molecular p-dopant for semiconducting polymers through the formation of Brønsted acidic complexes well high affinity toward Lewis-basic nitrogen moieties. Many conjugated that are used selective wrapping and dispersion single-walled carbon nanotubes (SWCNTs) such poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(6,6′-(2,2′-bipyridine))] (PFO-BPy) contain moieties should...
We demonstrate that the observed (in-)stability of n-doped carbon nanotube films in air not only depends on employed dopant but is also strongly affected by sample-specific factors, such as film thickness and density. show this for two typical dopants, polyethylenimine a potassium crown ether complex, preparing increasing thickness. argue reports stability cannot be properly assessed without knowledge these parameters, which explains some conflicting results literature.
Abstract Affordable and versatile power sources become crucial as miniaturized electronics sensors more widespread. Organic thermoelectric generators (TEGs), capable of tapping into wasted heat sustainably economically, are viewed key enablers for powering the sensor networks future. Until recently, performance n‐type organic materials has severely lagged behind their p‐type counterparts. However, reports a stable highly conductive polymer, poly(benzodifurandione) (PBFDO), changing this...