摘要柔性电子材料与器件是高新技术产业发展的趋势，可穿戴设备的发展对传统的压电材料提出了新的应用要求。具有可弯曲、任意塑形、高压电活性的柔性压电材料成为国际上一个研究热点。P(VDF-TrFE)作为一种柔性有机二聚物，具有优异的铁电压电性能，是柔性智能器件的重要材料基础。47861

本论文分别采用旋涂法和流延法制备出一系列二聚物P(VDF-TrFE)薄膜，对其微观形貌和电学性能进行了表征，证实了其具有良好的压电、铁电性能，并在此基础上设计了一种能量收集装置，通过手指的振动，获得可靠稳定的电信号。

毕业论文关键词  柔性电子材料 P(VDF-TrFE)薄膜 旋涂法 流延法 能量收集器

 毕业设计说明书外文摘要

Title  Wearable and flexible piezoelectric materials and energy harvester 

Abstract

The traditional, rigid piezoelectric materials cannot meet the demand of small and wearable electric devices. Instead, the flexible piezoelectric materials, which can be freely stretched and fabricated in any shapes, have been widely recognized and rapid developed. P(VDF-TrFE) is a piezoelectric polymer material, which can be directly transformed into piezoelectric β phase without the stretching process.

In this thesis, we prepare P(VDF-TrFE) thin films by spin-coating and casting techniques. Then, we characterize the microstructures and electrical properties. The results indicate the films we have prepared exhibit good piezoelectric and ferroelectric properties. Based on these films, an energy harvester has been designed. Reliable and stale electric signals have been observed in the proposed energy harvester in response to the mechanical excitation via fingers shaking.  

Keywords  Flexible electronics P(VDF-TrFE)  spin-coating  casting  energy harvester

目   次

1  引言 1

1.1  研究背景 1

1.2 柔性压电材料与能量收集器 1

1.3 课题的提出 4

2．实验方案设计与研究方法 7

2.1 实验药品及仪器 7

2.2 P(VDF-TrFE)薄膜制备工艺 8

2.2.1旋涂法制备P(VDF-TrFE)薄膜 8

2.2.2流延法制备P(VDF-TrFE)薄膜 9

2.3 金属电极的制备 10

2.4 P(VDF-TrFE)薄膜极化工艺 11

2.5 P(VDF-TrFE)薄膜性能表征测试 12

3．结果分析与讨论 14

3.1 薄膜制备工艺优化 14

3.1.1 旋涂工艺优化 14

3.1.2 流延工艺优化 14

3.1.3 极化参数优化 15

3.2 薄膜微观结构与形貌 15

3.3 薄膜电学性能 18

3.3.1 薄膜微观区域压电响应 18

3.3.2薄膜电滞回线 19

3.3.3薄膜介电压电性能 20

3.4 能量收集器装置性能 21

结  论 23

致  谢 24

参考文献 25