Publications by authors named "Bastian Gothe"
Oligothiophene Phosphonic Acids for Self-Assembled Monolayer Field-Effect Transistors.
ACS Appl Mater Interfaces
July 2021
Article Synopsis
- Semiconducting self-assembled monolayers (SAMs) are important for creating precise organic thin-film electronics by controlling the active layer's structure.
- The study focuses on self-assembled monolayer field-effect transistors (SAMFETs) made from phosphonic acid oligomers of 3-hexylthiophene, showing that increasing the number of thiophene units enhances charge mobility in the devices.
- Advanced techniques like X-ray reflectivity and X-ray photoelectron spectroscopy reveal that shorter oligomers align well with the substrate, whereas longer ones adopt a folded configuration, leading to a significant increase in mobility for the longer chains through molecular order adjustments.
Article Synopsis
- The research highlights the use of functional oligomers made from π-conjugated oligofluorenes to create amorphous monolayers that can selectively assemble.
- These monolayers show strong lateral charge transport abilities in self-assembled monolayer field-effect transistors, even across long distances and amid mixed types of molecules.
- The findings suggest that this oligomer approach could inspire innovative designs for new self-assembling semiconducting materials.
Article Synopsis
- SAMFETs are organic electronic devices that enable in-depth analysis of how structural features affect their performance, particularly in charge transport due to the 2D arrangement of molecules.
- The arrangement of these molecules is dictated by weak van-der-Waals forces, making them susceptible to structural changes over time.
- Research focused on two specific organic compounds shows significant differences in their crystallinity and charge-transport abilities, which were further explored through molecular dynamics simulations to understand the impact of dynamic disorder on their functionality.