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The Influence of Excited State Physics in Conjugated Polymer Devices

激发态物理对共轭聚合物器件的影响

基本信息

批准号：
EP/J009016/1
负责人：
Ifor Samuel
金额：
$ 57.77万
依托单位：
University of St Andrews
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2012
资助国家：
英国
起止时间：
2012 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FJ009016%2F1
关键词：
Influence Excited State Physics Conjugated

项目摘要

There has been remarkable progress over the last decade in making displays, lighting panels, solar cells and lasers out of flexible, plastic materials. This has a wide range of potential applications, such as roll up TV displays or having power generation, sensors and data communications systems woven into your clothing. The technology of organic LEDs has now matured to the degree that OLED displays are mass produced in consumer products such as mobile phones. The next generations of plastic electronics products will include OLED lighting, solar cells and lasers. It is now clear however that to deliver the technology for these demanding applications it is necessary to develop a deeper understanding of the basic materials physics. In all of these devices the physics of the excited states of molecules plays a crucial role in performance. In OLEDs the efficiency at high brightness is limited by the absorption due to charge carriers and various interactions that quench the light emission from excited states. In lasers there is a delicate interplay of the excited state physics and laser losses, and so far little is known about how the chemical and structural properties of the materials may be used to control this. This proposal seeks to develop this understanding by bringing together the expertise of two groups: one who are experts in measuring the optoelectronic performance of these polymers and in their application for photonics, and the other who are experts in the quantum theory of organic materials. Through a combination of theory and experiment we will aim to understand the complex excited state interactions of organic semiconductors, and uncover new design strategies to control these processes. This would help us to optimise the performance (e.g. efficiency and brightness) of current devices; and enable new generations of photonic devices based on these materials. We will make optical measurements of the fundamental excited-state processes in the materials and their behaviour under device conditions. Using state-of-the-art techniques in quantum mechanics we can also simulate the microscopic physics which gives rise to these effects. Measuring these interactions in working devices is particularly demanding and to achieve this we will also draw on specific complementary expertise from our project partners at Cambridge Display Technologies and the University of Alicante. We will then apply our new knowledge of excited states to the operation of a range of organic devices including OLEDs, lasers, solar cells and optical amplifiers. We will quantify the significance of the different excited state interactions and develop design strategies that can minimise parasitic processes and optimise operation.

在过去的十年里，在用柔性塑料材料制造显示器、照明面板、太阳能电池和激光器方面取得了显著的进展。这具有广泛的潜在应用，例如卷起电视显示器或将发电，传感器和数据通信系统编织到您的衣服中。有机LED的技术现在已经成熟到OLED显示器在诸如移动的电话的消费产品中批量生产的程度。下一代塑料电子产品将包括OLED照明、太阳能电池和激光器。然而，现在很明显，要为这些要求苛刻的应用提供技术，就必须对基本材料物理学有更深入的了解。在所有这些设备中，分子激发态的物理特性在性能中起着至关重要的作用。在OLED中，高亮度下的效率受到由于电荷载流子和淬灭来自激发态的光发射的各种相互作用引起的吸收的限制。在激光器中，激发态物理和激光损耗之间存在微妙的相互作用，迄今为止，人们对如何利用材料的化学和结构特性来控制这一点知之甚少。该提案旨在通过汇集两个小组的专业知识来发展这种理解：一个是测量这些聚合物的光电性能及其在光子学中的应用的专家，另一个是有机材料量子理论的专家。通过理论和实验的结合，我们的目标是了解有机半导体的复杂激发态相互作用，并发现新的设计策略来控制这些过程。这将有助于我们优化当前设备的性能（例如效率和亮度）;并实现基于这些材料的新一代光子设备。我们将对材料中的基本激发态过程及其在设备条件下的行为进行光学测量。使用量子力学中最先进的技术，我们还可以模拟产生这些效应的微观物理。测量工作设备中的这些相互作用要求特别高，为了实现这一目标，我们还将借鉴剑桥显示技术公司和阿利坎特大学的项目合作伙伴的具体互补专业知识。然后，我们将应用我们的激发态的新知识，包括OLED，激光器，太阳能电池和光放大器的有机器件的操作范围。我们将量化不同激发态相互作用的重要性，并制定设计策略，以最大限度地减少寄生过程并优化操作。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Effect of Annealing on Exciton Diffusion in a High Performance Small Molecule Organic Photovoltaic Material.

DOI：
10.1021/acsami.6b16487
发表时间：
2017-05-03
期刊：
ACS applied materials & interfaces
影响因子：
9.5
作者：
Long Y;Hedley GJ;Ruseckas A;Chowdhury M;Roland T;Serrano LA;Cooke G;Samuel IDW
通讯作者：
Samuel IDW

Hole delocalization as a driving force for charge pair dissociation in organic photovoltaics