Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 17, Pages 15372-15378Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am503873f
Keywords
pentacene; elecrtrostatic disorder; onset voltage; molecular dynamics; microelectrostatic model; coverage
Funding
- European Commission [228424]
- European Research Council [320680]
- Flemish Government agency IWT
- European Research Council (ERC) [320680] Funding Source: European Research Council (ERC)
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This study sheds light on the microscopic mechanisms by which self-assembled monolayers (SAMs) determine the onset voltage in organic thin-film transistors (OTFTs). Experiments and modeling are combined to investigate the self-assembly and electrostatic interaction processes in prototypical OTFT structures (SiO2/SAM/pentacene), where alkylated and fluoroalkylated silane SAMs are compared. The results highlight the coverage-dependent impact of the SAM on the density of semiconductor states and enable the rationalization and the control of the OTFT characteristics.
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