可延展有机电子的制备及性能研究

发布时间：2018-05-08 11:27

本文选题：弹性电子 + 有机薄膜晶体管　；参考：《合肥工业大学》2015年硕士论文

【摘要】：弹性电子器件可以重复拉伸、压缩、折叠、扭转等和应用于复杂曲面,与传统电子器件相比,弹性电子器件在生物医学、显示、成像系统、电子皮肤和太阳能电池板等领域有着广阔的应用前景。目前,有机薄膜晶体管和传感器作为弹性电子的两个重要领域,如何实现它们的弹性化成为非常热门的课题。本论文围绕如何实现有机薄膜晶体管半导体层与电极的弹性化以及弹性应力传感器的制备展开了一系列研究。主要工作如下：(1)研究了P3HT/SIS混合物在不同拉伸比例下性能与形貌的变化。研究发现,随着拉伸比例的不断增大,器件性能是有一定的减小的,未拉伸时候,器件的场效应迁移率在2.26×10-3 cm2 V-1 s-1左右；当拉伸10%时,器件迁移率有轻微下降,达到2.22×10-3cm2 V-1 s-1左右；继续拉伸到20%,器件的迁移率下降到1×10-3cm2 V-1 s-1;当拉伸到40%时,器件迁移率在9.3×10-4 cm2 V-1 s-1;继续拉伸到60%,器件半导体性能基本消失。(2)采用十二烷基磺酸钠(SDS)和聚(3,4-乙撑二氧噻吩)／聚苯乙烯磺酸盐(PEDOT/PSS)做分散剂制备了分散性能良好的多壁碳纳米管溶液,借助聚二甲基硅氧烷(PDMS)在硅片表面形成亲水疏水区域,可以实现溶液法制备图案化的碳纳米管薄膜电极。应用图案化碳纳米管电极制作聚(3-己基噻吩)有机薄膜晶体管,以SDS和PEDOT/PSS为分散剂获得的器件迁移率分别为0.01cm2 V-1 s-1和0.0075 cm2 V-1 s-1,开关电流比均为3×103。。(3)我们通过还原电纺聚氨酯纤维上附着的氧化石墨烯得到了一个高弹度灵活的、可伸缩的应力传感器。应力传感器在拉伸到50%的情况下电阻值变化了四分之一。电纺聚氨酯纤维的在制备成传感器过程时的形貌和稳定性我们同样做了研究。高度灵活的、可伸缩的应力传感器的实际应用潜力巨大,例如在人类运动检测领域。这种简单且廉价的石墨烯层可以用来有效的制备石墨烯应变传感器且这种传感器具备出色的稳定性和电学性能。
[Abstract]:Elastic electronic devices can be repeatedly stretched, compressed, folded, twisted, and applied to complex surfaces. Compared with traditional electronic devices, elastic electronic devices are used in biomedical, display, imaging systems. Electronic skin and solar panels and other fields have a broad application prospects. At present, organic thin film transistors and sensors are two important fields of elastic electronics. In this thesis, a series of researches have been carried out on how to realize the elasticity of semiconductor layer and electrode of organic thin film transistor and the fabrication of elastic stress sensor. The main work is as follows: 1) the properties and morphologies of P3HT/SIS mixtures under different tensile ratios were studied. It is found that with the increasing of the tensile ratio, the device performance decreases to a certain extent, the field effect mobility of the device is about 2.26 脳 10-3 cm2 V-1 s-1 before drawing, and the mobility of the device decreases slightly when the tensile ratio is 10 脳 10 ~ (-3). The mobility of the device decreases to 1 脳 10-3cm2 V-1 s-1 when stretching to 20; when stretching to 40, the mobility of the device decreases to 1 脳 10-3cm2 V-1 s-1; when stretching to 40, the mobility of the device decreases to 1 脳 10-3cm2 V-1 s-1. The device mobility is 9.3 脳 10 ~ (-4) cm2 V ~ (-1) -1s ~ (-1), and the semiconductor properties of the device basically disappear when stretching to 60 ~ (2).) the good dispersion properties are obtained by using sodium dodecyl sulfonate (SDSs) and poly (3o) 4- (ethylenedioxythiophene) / polystyrene sulfonate (PEDOT / PSS) as dispersants. Multiwalled carbon nanotubes solution, With the help of polydimethylsiloxane (PDMS), a hydrophilic region can be formed on the surface of silicon wafers, which can be used to fabricate patterned carbon nanotube thin film electrodes by solution method. Poly (3-hexylthiophene) organic thin film transistors were fabricated with patterned carbon nanotube electrodes. The device mobility obtained by using SDS and PEDOT/PSS as dispersant was 0.01cm2 V-1 s-1 and 0.0075 cm2 V-1 s-1, respectively, and the switching current ratio was 3 脳 10 3 路.0.The high elasticity of graphene oxide was obtained by reducing the adhesion of graphene oxide on polyurethane fiber. Scalable stress sensors. The resistance of the stress sensor changed by 1/4 when tensile to 50%. The morphology and stability of electrospun polyurethane fibers in the process of preparing sensors have also been studied. Highly flexible and scalable stress sensors have great potential in practical applications, for example in the field of human motion detection. This simple and cheap graphene layer can be used to prepare graphene strain sensors with excellent stability and electrical properties.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN605

【参考文献】