Giant polarization ripple in transverse pyroelectricity

Zhou，Yi1,2; Ding，Tianpeng1,3; Guo，Jun1; Xu，Guoqiang1; Cheng，Mingqiang4; Zhang，Chen1; Wang，Xiao Qiao1; Lu，Wanheng1; Ong，Wei Li1; Li，Jiangyu4; He，Jiaqing2; Qiu，Cheng Wei1; Ho，Ghim Wei1,5,6

2023-12-01

10.1038/s41467-023-35900-x

Nature Communications   影响因子和分区

2041-1723

Pyroelectricity originates from spontaneous polarization variation, promising in omnipresent non-static thermodynamic energy harvesting. Particularly, changing spontaneous polarization via out-of-plane uniform heat perturbations has been shown in solar pyroelectrics. However, these approaches present unequivocal inefficiency due to spatially coupled low temperature change and duration along the longitudinal direction. Here we demonstrate unconventional giant polarization ripples in transverse pyroelectrics, without increasing the total energy input, into electricity with an efficiency of 5-fold of conventional longitudinal counterparts. The non-uniform graded temperature variation arises from decoupled heat localization and propagation, leading to anomalous in-plane heat perturbation (29-fold) and enhanced thermal disequilibrium effects. This in turn triggers an augmented polarization ripple, fundamentally enabling unprecedented electricity generation performance. Notably, the device generates a power density of 38 mW m at 1 sun illumination, which is competitive with solar thermoelectrics and ferrophotovoltaics. Our findings provide a viable paradigm, not only for universal practical pyroelectric heat harvesting but for flexible manipulation of transverse heat transfer towards sustainable energy harvesting and management.

SCI

英语

NI论文

通讯

A*STAR["2019 AME IRG","A2083c0059"] ; National Natural Science Foundation of China["11934007","11874194","51632005"] ; Financial Support for Outstanding Talents Training Fund in Shenzhen[202108] ; Science and Technology Innovation Committee Foundation of Shenzhen[JCYJ20200109141205978] ; Ministry of Education, Singapore[A-0005143-01-00]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001008541400016

NATURE PORTFOLIO

2-s2.0-85146834878

Scopus

1.Department of Electrical and Computer Engineering,National University of Singapore,Singapore,Singapore
2.Department of Physics,Southern University of Science and Technology,Shenzhen,China
3.School of Electronic Science and Engineering,State Key Laboratory of Electronic Thin Film and Integrated Devices,University of Electronic Science and Technology of China,Chengdu,China
4.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,China
5.Department of Materials Science and Engineering,National University of Singapore,Singapore,Singapore
6.Institute of Materials Research and Engineering,A*STAR (Agency for Science,Technology and Research),Singapore,Singapore

Zhou，Yi,Ding，Tianpeng,Guo，Jun,et al. Giant polarization ripple in transverse pyroelectricity[J]. Nature Communications,2023,14(1).

Zhou，Yi.,Ding，Tianpeng.,Guo，Jun.,Xu，Guoqiang.,Cheng，Mingqiang.,...&Ho，Ghim Wei.(2023).Giant polarization ripple in transverse pyroelectricity.Nature Communications,14(1).

Zhou，Yi,et al."Giant polarization ripple in transverse pyroelectricity".Nature Communications 14.1(2023).