Temperature Dependence of Electrical Properties in Regioregular Poly(3-Hexylthiophene) Modulated by Chemical Doping

Abstract

Electrical conductivity and Seebeck coefficient in regioregular poly(3-hexylthiophene) (RR-P3HT) doped with iodine (I2) have been studied in temperature (T) range from 4.2 K to 300 K and from 77 K to 300 K, respectively. In spite of high doping rate (about 30%), RR-P3HT doped with I2 shows a semiconductive behavior in view of temperature dependence of both electrical conductivity and Seebeck coefficient. Temperature dependence of electrical conductivity shows charge transport mechanism of thermally activated hopping below doping rate of about 10% and variable range hopping above doping rate of about 10%. Temperature dependence of Seebeck coefficient shows that energy between Fermi level and valence band decreases with increase in doping rate.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2004
Accession Number
ADA441016

Entities

People

  • H. Ito
  • S. Kuroda
  • S. Ukai

Organizations

  • Nagoya University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Charge Carriers
  • Coefficients
  • Conductivity
  • Conjugated Polymers
  • Dielectrics
  • Electrical Conductivity
  • Electrical Properties
  • Energy
  • Fermi Levels
  • Field Effect Transistors
  • Heat Of Activation
  • Measurement
  • Mobility
  • Polymers
  • Semiconductors
  • Temperature Gradients
  • Transport Ships

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.