A giant negative electrocaloric effect in Eu-doped PbZrO3 thin films

Mao Ye; Tao Li; Qiu Sun; Zhikai Liu; Biaolin Peng; Chuanwei Huang; Peng Lin; Shanming Ke; Xierong Zeng; Xiang Peng; Lang Chen; Haitao Huang

doi:10.1039/C6TC00218H

A giant negative electrocaloric effect in Eu-doped PbZrO₃ thin films†

Mao Ye,^ab Tao Li,^abc Qiu Sun,^d Zhikai Liu,^d Biaolin Peng,^abc Chuanwei Huang,^a Peng Lin,^a Shanming Ke,*^a Xierong Zeng,^a Xiang Peng,^b Lang Chen^e and Haitao Huang*^c

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* Corresponding authors

^a Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, P. R. China
E-mail: smke@szu.edu.cn

^b Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education & Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China

^c Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
E-mail: aphhuang@polyu.edu.hk

^d School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, P. R. China

^e Department of Physics, South University of Science and Technology of China, Shenzhen 518055, P. R. China

Abstract

A negative electrocaloric effect (ECE) in 4 mol% Eu-doped PbZrO₃ antiferroelectric (AFE) thin films prepared by using a sol–gel method is investigated via indirect measurements. Temperature dependent P–E hysteresis loops were measured. A giant negative electrocaloric temperature change of over 6.6 K was observed. These results raised hopes for the enhancement of the cooling efficiency in combination with positive ECE.

Journal of Materials Chemistry C

A giant negative electrocaloric effect in Eu-doped PbZrO₃ thin films†

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A giant negative electrocaloric effect in Eu-doped PbZrO₃ thin films

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Journal of Materials Chemistry C