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Published on: June 18, 2013
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Sequential Doping of Ladder-Type Conjugated Polymers for Thermally Stable n-Type Organic Conductors
Suhao Wang1, Tero-Petri Ruoko1, Gang Wang1
1Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden.
ACS Applied Materials & Interfaces
|November 12, 2020
Summary
Developing thermally stable conducting polymers is key for advanced electronics. This study shows sequential doping of poly(benzimidazobenzophenanthroline) (BBL) with N-DMBI maintains conductivity after prolonged high-temperature exposure.
Area of Science:
- Organic electronics
- Materials science
- Polymer chemistry
Background:
- Doping enhances organic semiconductor performance in devices.
- Low thermal stability of doped polymers hinders practical applications.
- Need for conducting polymers with excellent high-temperature stability.
Purpose of the Study:
- To develop thermally stable conducting doped polymers.
- To investigate sequential doping of poly(benzimidazobenzophenanthroline) (BBL) with N-DMBI.
- To characterize the impact of thermal annealing on doped polymer properties.
Main Methods:
- Sequential doping of BBL with N-DMBI.
- Electrical conductivity and Seebeck coefficient measurements.
- UV-vis/infrared, X-ray diffraction, and electron paramagnetic resonance spectroscopy.
- Thermal annealing studies at elevated temperatures.
Main Results:
- N-DMBI-doped BBL exhibited unchanged electrical conductivity after 20 hours at 190 °C.
- Quantitative characterization of conductivity, Seebeck coefficient, spin density, and microstructure.
- Demonstrated remarkable thermal stability of electronic properties.
Conclusions:
- Sequential doping offers a route to highly thermally stable conducting polymers.
- N-DMBI-doped BBL is a promising material for high-temperature organic electronic applications, especially thermoelectrics.
- Overcomes a major limitation in the practical use of doped organic semiconductors.
Keywords:
conjugated polymersladder-type polymersn-dopingorganic thermoelectricssequential dopingthermal stabilityMore Related Videos
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