Thin film thermistor with positive temperature coefficient of resistance based on phase separated blends of ferroelectric and semiconducting polymers

Journal article (2016)

Authors

T. Lenz Max Planck Institute for Polymer Research, Graduate School Materials Science
H.S. Dehsari Max Planck Institute for Polymer Research
Kamal Asadi Max Planck Institute for Polymer Research
PWM Blom Graduate School Materials Science, Max Planck Institute for Polymer Research
W.A. Groen TNO, Novel Aerospace Materials - Aerospace Engineering
D.M. de Leeuw Novel Aerospace Materials - Aerospace Engineering , Max Planck Institute for Polymer Research
Research Group
Novel Aerospace Materials (Aerospace Engineering) (TU Delft)
Copyright: © 2016 T. Lenz, H.S. Dehsari, Kamal Asadi, PWM Blom, W.A. Groen, D.M. de Leeuw
DOI
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https://doi.org/10.1063/1.4963349
More Info
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Published Date

2016

Language

English

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Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Novel Aerospace Materials

Abstract

We demonstrate that ferroelectric memory diodes can be utilized as switching type positive temperature coefficient (PTC) thermistors. The diode consists of a phase separated blend of a ferroelectric and a semiconducting polymer stacked between two electrodes. The current through the semiconducting polymer depends on the ferroelectric polarization. At the Curie temperature the ferroelectric polymer depolarizes and consequently the current density through the semiconductor decreases by orders of magnitude. The diode therefore acts as switching type PTC thermistor. Unlike their inorganic counterparts, the PTC thermistors presented here are thin film devices. The switching temperature can be tuned by varying the Curie temperature of the ferroelectric polymer.