Flexible Semitransparent Energy Harvester with High Pressure Sensitivity and Power Density Based on Laterally Aligned PZT Single-Crystal Nanowires

Quan-Liang Zhao; Guang-Ping He; Jie-Jian Di; Wei-Li Song; Zhi-Ling Hou; Pei-Pei Tan; Da-Wei Wang; Mao-Sheng Cao

doi:10.1021/acsami.7b03929

Flexible Semitransparent Energy Harvester with High Pressure Sensitivity and Power Density Based on Laterally Aligned PZT Single-Crystal Nanowires

ACS Appl Mater Interfaces. 2017 Jul 26;9(29):24696-24703. doi: 10.1021/acsami.7b03929. Epub 2017 Jul 17.

Authors

Quan-Liang Zhao¹, Guang-Ping He¹, Jie-Jian Di¹, Wei-Li Song², Zhi-Ling Hou³, Pei-Pei Tan¹, Da-Wei Wang¹, Mao-Sheng Cao⁴

Affiliations

¹ School of Mechanical and Materials Engineering, North China University of Technology , Beijing 100144, PR China.
² Institute of Advanced Materials and Technology, University of Science and Technology Beijing , Beijing 100083, PR China.
³ School of Science, Beijing University of Chemical Technology , Beijing 100029, PR China.
⁴ School of Materials Science and Engineering, Beijing Institute of Technology , Beijing 100081, PR China.

PMID: 28715192
DOI: 10.1021/acsami.7b03929

Abstract

A flexible semitransparent energy harvester is assembled based on laterally aligned Pb(Zr_0.52Ti_0.48)O₃ (PZT) single-crystal nanowires (NWs). Such a harvester presents the highest open-circuit voltage and a stable area power density of up to 10 V and 0.27 μW/cm², respectively. A high pressure sensitivity of 0.14 V/kPa is obtained in the dynamic pressure sensing, much larger than the values reported in other energy harvesters based on piezoelectric single-crystal NWs. Furthermore, theoretical and finite element analyses also confirm that the piezoelectric voltage constant g₃₃ of PZT NWs is competitive to the lead-based bulk single crystals and ceramics, and the enhanced pressure sensitivity and power density are substantially linked to the flexible structure with laterally aligned PZT NWs. The energy harvester in this work holds great potential in flexible and transparent sensing and self-powered systems.

Keywords: PZT nanowires; energy harvester; flexible electronics; hydrothermal growth; piezoelectricity.