Charge Carrier Mobility in Poly(N,N'-bis-4-butylphenyl-N,N'-bisphenyl)benzidine Composites with Electron Acceptor...

Area of Science:

• Materials Science
• Organic Electronics
• Polymer Chemistry

Background:

• Polymer composites are crucial for advanced electronic devices.
• Investigating charge carrier mobility in novel composite systems is essential for performance optimization.

Purpose of the Study:

• To develop and characterize novel polymer composites based on poly(N,N'-bis-4-butylphenyl-N,N'-bisphenyl)benzidine (poly-TPD).
• To investigate charge carrier mobility in thin films of poly-TPD and copper(II) pyropheophorbide derivative (Cu-PP) composites for the first time.
• To evaluate the potential of these composites in photodetector applications.

Main Methods:

• Synthesis of poly(N,N'-bis-4-butylphenyl-N,N'-bisphenyl)benzidine (poly-TPD) based composites.
• Fabrication of thin films incorporating PCBM and copper(II) pyropheophorbide derivative (Cu-PP).
• Measurement and analysis of charge carrier mobility and photoconductivity.

Main Results:

• The ternary poly-TPD:PCBM:Cu-PP composite exhibited the most balanced electron and hole mobilities.
• Cu-PP sensitization significantly enhanced photoconductivity in blue and red spectral ranges.
• Charge carrier mobility was investigated for the first time in poly-TPD and Cu-PP composites.

Conclusions:

• The developed ternary polymer composites demonstrate promising properties for photodetector applications.
• Balanced charge carrier mobility and enhanced photoconductivity are key advantages of the new materials.
• The findings open new avenues for organic electronic device development using tailored polymer composites.