Understanding Oxygen-Induced Reactions in n-Type Polymeric Devices
Author Information
Author(s): Nayak Prem D., Dereli Büsra, Ohayon David, Wustoni Shofarul, Hidalgo Castillo Tania Cecilia, Druet Victor, Wang Yazhou, Hama Adel, Combe Craig, Griggs Sophie, Alsufyani Maryam, Sheelamanthula Rajendar, McCulloch Iain, Cavallo Luigi, Inal Sahika
Primary Institution: King Abdullah University of Science and Technology
Hypothesis
How do varying LUMO levels in n-type polymeric mixed conductors affect their electrochemical performance and stability in the presence of oxygen?
Conclusion
The study found that oxygen reduction reactions (ORR) occur in n-type polymers regardless of their LUMO levels, impacting device performance and stability.
Supporting Evidence
- All n-type polymers studied exhibited oxygen reduction reactions (ORR) regardless of their LUMO levels.
- ORR currents did not correlate with the LUMO levels of the polymers.
- Electrochemical doping levels remained unaffected by ORR.
- ORR primarily impacted gate currents without reducing channel currents in organic electrochemical transistors (OECTs).
- Different n-type polymers produced varying amounts of H2O and H2O2 during ORR.
Takeaway
This study shows that all n-type polymers react with oxygen, which can affect how well they work in devices, even if they have different energy levels.
Methodology
The study used electrochemical measurements, including linear voltammetry and Tafel slope analysis, to evaluate the impact of ORR on n-type polymeric mixed conductors.
Limitations
The study primarily focuses on three specific n-type polymers, which may limit the generalizability of the findings to other materials.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website