Wearable light emitting transistors for future communication devices

用于未来通信设备的可穿戴发光晶体管

• 批准号: EP/M001024/1
• 负责人: Monica Craciun
• 金额: $ 12.79万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM001024%2F1
• 关键词: Wearable; light; emitting; transistors; future

Nowadays, display and communication devices are supplementary items, many times posing transportation problems to the user, due to volume, weight and size, making them uncomfortable and inconvenient to use and carry. Current technology and innovation efforts look for alternative substrates, materials and ideas that eliminate or reduce much of these inconveniences. Products have been developed not only with reduced size and weight, but also improved flexibility. These products, including e-readers or rollable displays mimic more traditional forms of displaying information such as the information printed on paper. However, all of these applications are far from being fully integrated in basic objects of our society.This proposal seeks to establish a new ground-breaking technology for flexible, transparent, comfortable and easy to carry textile-embedded communication devices. The approach to realize this aim is to build the first fibre-embedded device with controllable light emission: a light-emitting transistor completely entrenched in a fabric. This will be achieved by combining organic semiconductors and dielectrics with graphene as conductive layer, in a novel concept that merges flexibility, transparency, optoelectronic properties and fabrication compatibility of these materials with textiles.Graphene and organic semiconductors combine mechanical flexibility and optical transparency with excellent electronic characteristics and low-temperature processing and are ideal for non-conventional substrates such as fibres of textiles. With just 3-4 Å thickness, monolayer graphene not only ensures high transparency, but it is bendable and stretchable. Together with its robustness and high conductivity, it is an extremely good candidate to replace current metallic electrodes. Polymers and organic small molecules, on the other hand, present a wide range of electrical behaviour, from conductors to insulators, with the possibility of solution processing. Several families of organic compounds present semiconductor behaviour and are successfully used in organic field-effect-transistors. Another advantage of organic materials is the possibility of chemical modification to add functionalities or change mechanical and optoelectronic properties. Such unique properties, allied with the potential that organic-semiconductor devices have demonstrated for display technology make it reasonable that a ground-break idea of wearable displays is achievable.The outputs of the proposed project, the development of textile-embedded optoelectronic devices, will be fundamental to the development of smart textiles as well as of transparent and flexible electronics. Achieving this goal is of strategic importance to secure a leading role of UK in these research fields. The results of this research are also likely to be of wide use in consumer applications. For instance, the project will allow the development of completely new approaches for integrated electronics and forms of displaying information, capable to be embedded into our everyday clothing. Since textiles are so present in society, the ability to embed display-based information and communication devices into wearable textiles would transform our clothing into mobile phones, displays with electronic newspapers or GPS-activated maps, and would certainly facilitate interactions and exchanges between individuals and communities. Such devices represent a radical alternative to conventional technologies as they must bend, stretch, compress, twist and deform into complex shapes while maintaining their levels of performance and reliability. Establishing the foundations for this future in electronics is also essential for other societal needs, such as biomedical monitoring, communication tools for the sensory impaired people, and personal security.

如今，显示和通信设备是辅助设备，由于体积、重量和尺寸的原因，多次给用户带来运输问题，使其不舒服，使用和携带不便。目前的技术和创新努力正在寻找替代基材、材料和想法，以消除或减少这些不便。开发的产品不仅尺寸和重量更小，而且灵活性也得到了提高。这些产品，包括电子阅读器或滚动显示屏，模仿了更传统的信息显示形式，如打印在纸上的信息。然而，所有这些应用程序还远远没有完全整合到我们社会的基本对象中。这项提议旨在建立一种新的突破性技术，用于灵活、透明、舒适和易于携带的纺织品嵌入式通信设备。实现这一目标的方法是建造第一个具有可控发光的光纤嵌入设备：一个完全固定在织物中的发光晶体管。这将通过将有机半导体和介电材料与石墨烯作为导电层相结合来实现，这一新概念将这些材料的柔性、透明度、光电性能和制造兼容性与织构相结合。石墨烯和有机半导体将机械灵活性和光学透明度与优异的电子特性和低温加工结合在一起，是纺织纤维等非传统基材的理想选择。单层石墨烯的厚度只有3-4？，不仅确保了高透明度，而且还可以弯曲和拉伸。再加上它的坚固性和高导电性，它是取代目前金属电极的一个非常好的候选者。另一方面，聚合物和有机小分子表现出从导体到绝缘体的广泛的电学行为，并具有溶液处理的可能性。几个有机化合物家族表现出半导体行为，并成功地用于有机场效应晶体管。有机材料的另一个优点是可以通过化学修饰来增加功能或改变机械和光电性能。这些独特的特性，再加上有机半导体器件在显示技术上所展示的潜力，使得可穿戴式显示器的突破性想法成为可能。拟议项目的成果--开发嵌入纺织品的光电设备--将是智能纺织品以及透明和灵活电子产品发展的基础。实现这一目标对于确保英国在这些研究领域的领先地位具有重要的战略意义。这项研究的结果也可能在消费者应用中广泛使用。例如，该项目将允许开发全新的集成电子方法和信息显示形式，能够嵌入到我们的日常服装中。由于纺织品在社会中如此普遍，将基于显示器的信息和通信设备嵌入可穿戴纺织品的能力将把我们的服装转变为移动电话、带有电子报纸或GPS激活地图的显示器，并且肯定会促进个人和社区之间的互动和交流。这类设备代表着传统技术的一种彻底替代，因为它们必须弯曲、拉伸、压缩、扭曲和变形成复杂的形状，同时保持其性能和可靠性水平。为电子产品的未来奠定基础对其他社会需求也是至关重要的，例如生物医学监测、为感官受损的人提供的通信工具以及个人安全。

项目成果

Homogeneously bright, flexible and foldable lighting devices with functionalised graphene electrodes

具有功能化石墨烯电极的均匀明亮、灵活且可折叠的照明装置

• DOI: 10.48550/arxiv.1606.05482
• 发表时间: 2016
• 作者: Alonso E

Is graphene a good transparent electrode for photovoltaics and display applications?

• DOI: 10.1049/iet-cds.2015.0121
• 发表时间: 2015-11-01
• 期刊: IET CIRCUITS DEVICES & SYSTEMS
• 影响因子: 1.3
• 作者: Bointon, Thomas H.;Russo, Saverio;Craciun, Monica Felicia
• 通讯作者: Craciun, Monica Felicia

High Quality Monolayer Graphene Synthesized by Resistive Heating Cold Wall Chemical Vapor Deposition.

• DOI: 10.1002/adma.201501600
• 发表时间: 2015-07-22
• 期刊: Advanced materials (Deerfield Beach, Fla.)
• 作者: Bointon TH;Barnes MD;Russo S;Craciun MF
• 通讯作者: Craciun MF

High Efficiency CVD Graphene-lead (Pb) Cooper Pair Splitter.

• DOI: 10.1038/srep23051
• 发表时间: 2016-03-14
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: Borzenets IV;Shimazaki Y;Jones GF;Craciun MF;Russo S;Yamamoto M;Tarucha S
• 通讯作者: Tarucha S

High quality monolayer graphene synthesized by resistive heating cold wall chemical vapour deposition

电阻加热冷壁化学气相沉积法合成高品质单层石墨烯

• 发表时间: 2015
• 期刊: arXiv e-prints
• 作者: Bointon Thomas H.