skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermoelectric Properties of Poly(3-hexylthiophene) (P3HT) Doped with 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F 4 TCNQ) by Vapor-Phase Infiltration

Journal Article · · Chemistry of Materials
 [1];  [1];  [2]; ORCiD logo [1]
  1. Materials Department, University of California, Santa Barbara, California 93106, United States
  2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
+ Show Author Affiliations

Doping of thin films of semiconducting polymers provides control of their electrical conductivity and thermopower. The electrical conductivity of semiconducting polymers rises nonlinearly with the carrier concentration, and there is a lack of understanding of the detailed factors that lead to this behavior. We report a study of the morphological effects of doping on the electrical conductivity of poly(3-hexylthiophene) (P3HT) thin films doped with small molecule 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ). Resonant soft X-ray scattering shows that the morphology of films of P3HT is not strongly changed by infiltration of F4TCNQ from the vapor phase. We show that the local ordering of P3HT, the texture and form factor of crystallites, and the long-range connectivity of crystalline domains contribute to the electrical conductivity in thin films. The thermopower of films of P3HT doped with F4TCNQ from the vapor phase is not strongly enhanced relative to films doped from solution, but the electrical conductivity is significantly higher, improving the thermoelectric power factor.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1418399
Alternate ID(s):
OSTI ID: 1434018; OSTI ID: 1508616
Journal Information:
Chemistry of Materials, Journal Name: Chemistry of Materials Vol. 30 Journal Issue: 3; ISSN 0897-4756
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 158 works
Citation information provided by
Web of Science

Cited By (18)

A new 3-D coordination polymer as a precursor for CuI-based thermoelectric composites journal January 2018
Ultrafast transient absorption spectroscopy of doped P3HT films: distinguishing free and trapped polarons journal January 2019
Selective Doping of Conjugated Block Copolymer for Organic Thermoelectric Applications journal March 2019
Selective Doping of Conjugated Block Copolymer for Organic Thermoelectric Applications text January 2019
Selective Doping of Conjugated Block Copolymer for Organic Thermoelectric Applications text January 2019
X-Ray Scattering Reveals Ion-Induced Microstructural Changes During Electrochemical Gating of Poly(3-Hexylthiophene) journal September 2018
Soft Electronically Functional Polymeric Composite Materials for a Flexible and Stretchable Digital Future journal August 2018
Dodecaborane‐Based Dopants Designed to Shield Anion Electrostatics Lead to Increased Carrier Mobility in a Doped Conjugated Polymer journal January 2019
Dopant‐Dependent Increase in Seebeck Coefficient and Electrical Conductivity in Blended Polymers with Offset Carrier Energies journal February 2019
The Role of Ordering on the Thermoelectric Properties of Blends of Regioregular and Regiorandom Poly(3‐hexylthiophene) journal April 2019
Effect of Heteroatom and Doping on the Thermoelectric Properties of Poly(3-alkylchalcogenophenes) journal October 2018
Highly Passivated n‐Type Colloidal Quantum Dots for Solution‐Processed Thermoelectric Generators with Large Output Voltage journal June 2019
Principles of Structural Design of Conjugated Polymers Showing Excellent Charge Transport toward Thermoelectrics and Bioelectronics Applications journal March 2019
Fine-tuning the solid-state ordering and thermoelectric performance of regioregular P3HT analogues by sequential oxygen-substitution of carbon atoms along the alkyl side chains journal January 2019
Balancing the electrical conductivity and Seebeck coefficient by controlled interfacial doping towards high performance benzothienobenzothiophene-based organic thermoelectric materials journal January 2019
Thermoelectric materials and applications for energy harvesting power generation journal November 2018
BN Embedded Polycyclic π-Conjugated Systems: Synthesis, Optoelectronic Properties, and Photovoltaic Applications journal August 2018
Selective Doping of Conjugated Block Copolymer for Organic Thermoelectric Applications text January 2019

Similar Records

The Role of Ordering on the Thermoelectric Properties of Blends of Regioregular and Regiorandom Poly(3‐hexylthiophene)
Journal Article · Thu Apr 25 00:00:00 EDT 2019 · Advanced Electronic Materials · OSTI ID:1418399
+1 more
Effect of processing conditions on additive DISC patterning of P3HT films
Journal Article · Tue Dec 04 00:00:00 EST 2018 · Journal of Materials Chemistry C · OSTI ID:1418399
+7 more
Effects of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane doping on diketopyrrolopyrrole-based, low crystalline, high mobility polymeric semiconductor
Journal Article · Mon Sep 28 00:00:00 EDT 2015 · Applied Physics Letters · OSTI ID:1418399
+1 more

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY