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

Title: Room-Temperature Electrocaloric Effect in Layered Ferroelectric CuInP2S6 for Solid-State Refrigeration

Journal Article · · ACS Nano

A material with reversible temperature change capability under an external electric field, known as the electrocaloric effect (ECE), has long been considered as a promising solid-state cooling solution. However, electrocaloric (EC) performance of EC materials generally is not sufficiently high for real cooling applications. As a result, exploring EC materials with high performance is of great interest and importance. Here, we report on the ECE of ferroelectric materials with van der Waals layered structure (CuInP2S6 or CIPS in this work in particular). Over 60% polarization charge change is observed within a temperature change of only 10 K at Curie temperature. Large adiabatic temperature change (|ΔT|) of 3.3 K and isothermal entropy change (|ΔS|) of 5.8 J kg–1 K–1 at |ΔE| = 142.0 kV cm–1 and at 315 K (above and near room temperature) are achieved, with a large EC strength (|ΔT|/|ΔE|) of 29.5 mK cm kV–1. Furthermore, the ECE of CIPS is also investigated theoretically by numerical simulation, and a further EC performance projection is provided.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1560477
Journal Information:
ACS Nano, Vol. 13, Issue 8; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

References (25)

Giant Electrocaloric Effect in Thin-Film PbZr0.95Ti0.05O3 journal March 2006
Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature journal August 2008
Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect journal October 2010
Electrocaloric Materials journal August 2011
Electrocaloric materials for future solid-state refrigeration technologies journal July 2012
Caloric materials near ferroic phase transitions journal April 2014
Giant Electrocaloric Response Over A Broad Temperature Range in Modified BaTiO 3 Ceramics journal September 2013
Ferroelectric Polymer Nanocomposites for Room-Temperature Electrocaloric Refrigeration journal January 2015
Direct and indirect measurements on electrocaloric effect: Recent developments and perspectives journal September 2016
Highly efficient electrocaloric cooling with electrostatic actuation journal September 2017
Large Electrocaloric Effect in Relaxor Ferroelectric and Antiferroelectric Lanthanum Doped Lead Zirconate Titanate Ceramics journal March 2017
Direct Measurement of Large Electrocaloric Effect in Ba(Zr x Ti 1– x )O 3 Ceramics journal January 2018
Enhancement of the electrocaloric effect over a wide temperature range in PLZT ceramics by doping with Gd3+ and Sn4+ ions journal April 2019
CuInP 2 S 6 Room Temperature Layered Ferroelectric journal May 2015
Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes journal August 2016
Out-of-Plane Piezoelectricity and Ferroelectricity in Layered α-In 2 Se 3 Nanoflakes journal August 2017
Ferroelectric switching of a two-dimensional metal journal July 2018
Ferroelectric Field-Effect Transistors Based on MoS 2 and CuInP 2 S 6 Two-Dimensional van der Waals Heterostructure journal June 2018
Room-temperature crystal structure of the layered phase CuIInIIIP2S6 journal March 1995
Raman spectroscopy study of the ferrielectric-paraelectric transition in layered CuInP 2 S 6 journal October 1998
The effects of microstructure on the electrocaloric properties of Pb(Zr,Sn,Ti)O 3 ceramics journal October 1981
Anisotropic thermal properties and ferroelectric phase transitions in layered CuInP2S6 and CuInP2Se6 crystals journal December 2017
CXXIII. The dielectric properties of barium titanate single crystals in the region of their upper transition temperature journal October 1953
Double Hysteresis Loop of BaTi O 3 at the Curie Point journal August 1953
Discontinuous Field‐Induced Transitions in Barium Titanate above the Curie Point journal December 1956

Cited By (2)

Tunable quadruple-well ferroelectric van der Waals crystals journal November 2019
Cation role in the thermal properties of layered materials M 1 + M 3 + P 2 ( S , Se ) 6 ( M 1 + = Cu , Ag ; M 3 + = In , Bi ) journal October 2019

Figures / Tables (5)