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

Title: Prediction of Giant Thermoelectric Efficiency in Crystals with Interlaced Nanostructure

Journal Article · · Nano Letters
 [1];  [1];  [2]
  1. Vanderbilt Univ., Nashville, TN (United States)
  2. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We present a theoretical study of the thermoelectric efficiency of “interlaced crystals”, recently discovered in hexagonal-CuInS2 nanoparticles. Interlaced crystals are I–III–VI2 or II-IV-V2 tetrahedrally bonded compounds. They have a perfect Bravais lattice in which the two cations have an infinite set of possible ordering patterns within the cation sublattice. The material comprises nanoscale interlaced domains and phases with corresponding boundaries. Here we employ density functional theory and large-scale molecular dynamics calculations based on model classical potentials to demonstrate that the phase and domain boundaries are effective phonon scatterers and greatly suppress thermal conductivity. However, the absence of both structural defects and strain in the interlaced material results in a minimal effect on electronic properties. Here, we predict an increase of thermal resistivity of up to 2 orders of magnitude, which makes interlaced crystals an exceptional candidate for thermoelectric applications.

Research Organization:
Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
FG02-09ER46554; AC02-05CH11231
OSTI ID:
1597736
Journal Information:
Nano Letters, Vol. 16, Issue 1; ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English

References (25)

Sharp band edge photoluminescence of high-purity CuInS2 single crystals journal February 2001
Perspectives on thermoelectrics: from fundamentals to device applications journal January 2012
Hybrid functionals based on a screened Coulomb potential journal May 2003
Electronic and Optical Structure of Wurtzite CuInS 2 journal June 2014
Enhanced Thermoelectric Figure-of-Merit in Nanostructured p-type Silicon Germanium Bulk Alloys journal December 2008
Thermoelectric figure of merit of a one-dimensional conductor journal June 1993
Enhanced Thermoelectric Performance of Cu2CdSnSe4 by Mn Doping: Experimental and First Principles Studies journal July 2014
New Directions for Low-Dimensional Thermoelectric Materials journal April 2007
Dynamical simulations of nonequilibrium processes — Heat flow and the Kapitza resistance across grain boundaries journal May 1997
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Core–Shell Nanoparticles As Building Blocks for the Bottom-Up Production of Functional Nanocomposites: PbTe–PbS Thermoelectric Properties journal March 2013
Alloyed Copper Chalcogenide Nanoplatelets via Partial Cation Exchange Reactions journal July 2014
Structural diversity and electronic properties of Cu 2 Sn X 3 ( X = S , Se): A first-principles investigation journal August 2011
A simple nonequilibrium molecular dynamics method for calculating the thermal conductivity journal April 1997
Thermal boundary resistance journal July 1989
Thermoelectric Materials, Phenomena, and Applications: A Bird's Eye View journal March 2006
Thermoelectric Phenomena, Materials, and Applications journal August 2011
Thermal transport across Twin Grain Boundaries in Polycrystalline Graphene from Nonequilibrium Molecular Dynamics Simulations journal September 2011
Bulk nanostructured thermoelectric materials: current research and future prospects journal January 2009
High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys journal May 2008
Crystallographic Control at the Nanoscale To Enhance Functionality: Polytypic Cu 2 GeSe 3 Nanoparticles as Thermoelectric Materials journal November 2012
Interlaced crystals having a perfect Bravais lattice and complex chemical order revealed by real-space crystallography journal November 2014
Enhanced Thermoelectric Figure-of-Merit in p-Type Nanostructured Bismuth Antimony Tellurium Alloys Made from Elemental Chunks journal August 2008
Occurrence of Polytypism in Compound Colloidal Metal Chalcogenide Nanocrystals, Opportunities, and Challenges journal July 2015

Similar Records

Interlaced crystals having a perfect Bravais lattice and complex chemical order revealed by real-space crystallography
Journal Article · Fri Nov 14 00:00:00 EST 2014 · Nature Communications · OSTI ID:1597736

Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2
Journal Article · Sun Jun 02 00:00:00 EDT 2013 · Nature Nanotechnology · OSTI ID:1597736

Absence of Nanostructuring in NaPbmSbTem+2: Solid Solutions with High Thermoelectric Performance in the Intermediate Temperature Regime
Journal Article · Fri May 25 00:00:00 EDT 2018 · Journal of the American Chemical Society · OSTI ID:1597736