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

Title: Seebeck Effects in N-Type and P-Type Polymers Driven Simultaneously by Surface Polarization and Entropy Differences Based on Conductor/Polymer/Conductor Thin-Film Devices

Journal Article · · ACS Nano
 [1];  [1];  [1];  [2];  [2];  [3];  [4];  [5]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Peking Univ., Beijing (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Air Force Research Lab. (AFRL), Wright-Patterson AFB, OH (United States)
  5. Univ. of Tennessee, Knoxville, TN (United States); Beijing Jiaotong Univ., Beijing (China)
+ Show Author Affiliations

This paper reports Seebeck effects driven by both surface polarization difference and entropy difference by using intramolecular charge-transfer states in n-type and p-type conjugated polymers, namely IIDT and IIDDT, based on vertical conductor/polymer/conductor thin-film devices. Large Seebeck coefficients of -898 V/K and 1300 V/K from are observed from n-type IIDT p-type IIDDT, respectively, when the charge-transfer states are generated by a white light illumination of 100 mW/cm2. Simultaneously, electrical conductivities are increased from almost insulating states in dark condition to conducting states under photoexcitation in both n-type IIDT and p-type IIDDT devices. We find that the intramolecular charge-transfer states can largely enhance Seebeck effects in the n-type IIDT and p-type IIDDT devices driven by both surface polarization difference and entropy difference. Furthermore, the Seebeck effects can be shifted between polarization and entropy regimes when electrical conductivities are changed. This reveals a new concept to develop Seebeck effects by controlling polarization and entropy regimes based on charge-transfer states in vertical conductor/polymer/conductor thin-film devices.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1265653
Journal Information:
ACS Nano, Vol. 9, Issue 5; ISSN 1936-0851
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

References (20)

Enhancement of Thermoelectric Efficiency in PbTe by Distortion of the Electronic Density of States journal July 2008
CRC Handbook of Thermoelectrics book January 2017
Observation of Anderson Localization in an Electron Gas journal May 1969
High-Performance Air-Stable Organic Field-Effect Transistors: Isoindigo-Based Conjugated Polymers journal April 2011
Surface polarization enhanced Seebeck effects in vertical multi-layer metal–polymer–metal thin-film devices journal January 2014
Studies on monobenzo 18-crown-6-ether substituted phenylenevinylene oligomer: synthesis, photoluminescent, and dielectric properties journal August 2011
N -(hydroxymethyl) acrylamide as a multifunctional finish to cotton and a tether for grafting methacrylamide for biocidal coatings journal November 2012
Applications of wittig reactions in dibenzo 18-crown-6-ether substituted phenylenevinylene oligomer-synthesis, photo luminescent, and dielectric properties journal November 2010
π-Conjugated Zwitterions as Paradigm of Donor–Acceptor Building Blocks in Organic-Based Materials journal October 2013
Enhancing Seebeck Effects by Using Excited States in Organic Semiconducting Polymer MEH-PPV Based on Multilayer Electrode/Polymer/Electrode Thin-Film Structure journal May 2013
Effect of interchain interactions on the absorption and emission of poly(3-hexylthiophene) journal February 2003
Role of Intermolecular Coupling in the Photophysics of Disordered Organic Semiconductors: Aggregate Emission in Regioregular Polythiophene journal May 2007
Determining exciton coherence from the photoluminescence spectral line shape in poly(3-hexylthiophene) thin films journal February 2009
Electronic excitations and metal-insulator transition in poly(3-hexylthiophene) organic field-effect transistors journal January 2007
Interplay of disorder and electron-phonon coupling in models of polyacetylene journal May 1987
Modeling disorder in polymer aggregates: The optical spectroscopy of regioregular poly(3-hexylthiophene) thin films journal June 2005
Spectroscopic investigation of excitons, photocarriers, and bias-induced carriers in regioregular poly(3-alkylthiophene) journal May 2011
Polymer–fullerene bulk heterojunction solar cells journal August 2010
Simultaneous Enhancement of Open-Circuit Voltage, Short-Circuit Current Density, and Fill Factor in Polymer Solar Cells journal September 2011
Extraction of Schottky diode parameters from forward current‐voltage characteristics journal July 1986

Cited By (4)

Fundamental Thermoelectric Properties in Organic Heterojunctions from Molecular to Thin‐Film and Hybrid Designs journal August 2019
Thermally Enhanced n‐Type Thermoelectric Behavior in Completely Organic Graphene Oxide‐Based Thin Films journal October 2018
Advances in n‐Type Organic Thermoelectric Materials and Devices journal February 2019
Growth of close-packed crystalline polypyrrole on graphene oxide via in situ polymerization of two-monomer-connected precursors journal January 2019

Similar Records

Optically tunable Seebeck effect from intramolecular proton-transfer materials in organic vertical thin-film thermoelectric device
Journal Article · Fri Jul 17 00:00:00 EDT 2015 · Organic Electronics · OSTI ID:1265653
+5 more
High Seebeck effects from conducting polymer: Poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) based thin-film device with hybrid metal/polymer/metal architecture
Journal Article · Sun Jan 01 00:00:00 EST 2012 · Applied Physics Letters · OSTI ID:1265653
+1 more
Sequential Doping of Ladder-Type Conjugated Polymers for Thermally Stable n-Type Organic Conductors
Journal Article · Thu Nov 12 00:00:00 EST 2020 · ACS Applied Materials and Interfaces · OSTI ID:1265653
+9 more

Related Subjects

36 MATERIALS SCIENCE
thin film thermoelectric