具有巨大的压电系数的二维分层矿铁电
Xiao-Gang Chen1, Xian-Jiang Song1, Zhi-Xu Zhang1
1Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics , Southeast University , Nanjing 211189 , People's Republic of China.
Journal of the American Chemical Society
|December 19, 2019
概括
一个新的二维矿铁电, (4-aminotetrahydropyran) 2PbBr4 [(ATHP) 2PbBr4],显示出特殊的压电电压系数和高基里温度. 这种材料对灵活电子的先进压电传感器有很大的前景.
科学领域:
- 材料科学
- 固态物理
- 纳米技术
背景情况:
- 物联网 (IoT) 需要能够在各种条件下运行的高性能压电传感器.
- 压电传感器的关键性能指标包括高压电压系数 (g) 和高基里温度 (Tc).
研究的目的:
- 报告一个新的二维矿铁电材料, (4-aminotetrahydropyran) 2PbBr4 [(ATHP) 2PbBr4 .
- 评估 (ATHP) 2PbBr4在下一代压电传感器应用中的潜力.
主要方法:
- 合成和描述二维矿铁电 (ATHP) 2PbBr4.
- 测量其和极化,库里温度 (Tc) 和压电电压系数 (g33).
- 与现有的压电材料如BaTiO3 (BTO),Pb(Zr,Ti) O3 (PZT) 和聚乙烯化物 (PVDF) 的比较分析.
主要成果:
- (ATHP) 2PbBr4 的和极化为5.6μC cm-2.
- 达到503K的高基里温度 (Tc),超过BaTiO3 (393K).
- 证明极大的压电电压系数 (g33) 为660.3 × 10-3 V m N-1,明显超过PZT和PVDF.
结论:
- (ATHP) 2PbBr4具有卓越的压电特性,包括高Tc和异常大的g33.
- 它的轻量,灵活和环保的加工优势使其适用于先进的应用.
- (ATHP) 2PbBr4是下一代灵活,软机器人和生物医学设备中的智能压电传感器的强大候选.
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