Ferroelectric Properties of Polymer–Semiconductor Hybrid Material or Composite under Optical Excitation
Michael Kober, David Smykalla, Bernd Ploss, Maria Wächtler, Krishan Kumar, Michael Stelter, Sebastian Engel
TL;DR
This paper explores how light affects the electrical and polarization properties of polymer-semiconductor hybrid materials, which could be useful for flexible sensors.
Contribution
The study demonstrates light-controlled conductivity and polarization in polymer–semiconductor composites with high optical transparency.
Findings
Optical excitation controls electrical conductivity and polarization behavior in hybrid materials.
CdSe quantum-dot-based hybrids show high optical transparency suitable for sensor applications.
Abstract
Polymer–semiconductor hybrid materials or composites have been investigated with respect to their microstructure, optical, photoconductive, and ferroelectric properties. For this purpose, either CdSe quantum dots or (Cd:Zn)S microparticles were dispersed in poly(vinylidenefluoride-trifluoroethylene) solution and hot pressed to films. In both material systems, the electrical conductivity and the polarization behavior could be controlled by the intensity of the optical excitation. The simultaneous high optical transparency of the CdSe quantum-dot-based hybrid materials makes them particularly interesting for applications in the field of flexible, high-resolution sensors.
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Taxonomy
TopicsConducting polymers and applications · Advanced Sensor and Energy Harvesting Materials · Gas Sensing Nanomaterials and Sensors