Additive-Stabilized Polymer Electronics Manufacturing (ASPEM)

添加剂稳定聚合物电子制造 (ASPEM)

• 批准号: EP/R031894/1
• 负责人: Henning Sirringhaus
• 金额: $ 46.92万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR031894%2F1
• 关键词: Additive; Stabilized; Polymer; Electronics; Manufacturing

Organic semiconductors have been the subject of focussed research efforts for more than two decades. By investigating a wide range of conjugated polymers as well as molecular materials, molecular structure-property relationships have become understood in detail. This has resulted in a spectacular improvement in materials and device performance: As an example, in the mid 1990's organic semiconductors exhibited field-effect mobilities in transistors of less than 10^-2-10^-3 cm2/Vs, which were at least two orders of magnitude lower than those of industry standard amorphous silicon transistors, that are used in liquid crystal display applications and exhibit mobilities of 1 cm2/Vs. Today state-of-the-art organic transistors reach mobilities of 2-5 cm2/Vs for polymers and 5-15 cm2/Vs for molecular systems. Similarly, the power conversion efficiency of organic solar cells has increased to 14-15% due to availability of improved materials, in particular the development of non-fullerene acceptors. As a result organic semiconductors and conjugated polymers are now an emerging technology in a broad range of applications: Organic light-emitting diodes have become an established display technology for high-end smart phones and TVs. The performance of polymer solar cells cannot compete yet with silicon solar cells for power generation applications, but for indoor energy harvesting organic solar cells are already competitive. Polymer-based OFETs have found niche applications, including flexible e-paper displays. Over the last two years due to the commercial availability of higher mobility materials the outlook for mass market application has improved: More advanced display applications, such as LCD displays, as well as non-display applications, such as X-ray imaging and fingerprint sensing have become technologically feasible and are attracting serious industrial interest and investment. One of the technology challenges that has, however, not been fully addressed yet is operational reliability: Despite significant progress it would be fair to say that neither OLEDs nor organic solar cells match the impressive reliability of inorganic semiconductor based technologies that in many cases exceed 5-10 years of product lifetime. Also the threshold voltage stability of OFETs during extended periods of operation is inferior to those of oxide or polycrystalline silicon transistors, which exhibit threshold voltage shifts of less than 0.5V during continuous driving over an extended period. The proposed project is based on a recent technology breakthrough: We have discovered that the operational stability of state-of-the-art high mobility polymer transistors can be dramatically increased by addition of a small molecular additive to the polymer film (Nikolka et al., Nature Materials 16, 356 (2017)). We propose to develop this technique for additive-stabilized polymer (ASP) films into a scalable manufacturing technology that meets the requirements for industrial manufacturing across a range of applications. Our ASP technique has the potential of significantly improving the performance and reliability of conjugated polymers to a level where they can meet similarly demanding reliability requirements as achieved with established inorganic semiconductors.

有机半导体已成为重点研究工作的主题，已有二十多年了。通过研究广泛的共轭聚合物以及分子材料，分子结构 - 特性关系已详细了解。这导致了材料和设备性能的显着改善：例如，在1990年代中期，有机物半导体在小于10^-2-10^-3 cm2/vs的晶体管中表现出现场效应的行动，它们至少比行业标准的硅晶体动物的液体晶体型和1次液体的液体表现为1级及其均具有1份的液体级数，该级数至少低两个。如今，最先进的有机晶体管可为聚合物提供2-5 cm2/vs的迁移率，分子系统的迁移率为5-15 cm2/vs。同样，由于改进的材料的可用性，尤其是非富勒烯受体的发展，有机太阳能电池的功率转化效率已增加到14-15％。结果，有机半导体和共轭聚合物现在已成为广泛应用中的新兴技术：有机发光二极管已成为高端智能手机和电视的既定显示技术。聚合物太阳能电池的性能尚未与硅太阳能电池竞争，以进行发电，但是对于室内能量收集，有机太阳能电池已经具有竞争力。基于聚合物的OFET找到了利基应用，包括灵活的电子纸显示。在过去的两年中，由于较高的流动性材料的商业可用性，大众市场应用的前景得到了改善：更高级的显示应用程序，例如LCD显示器以及非显示应用程序，例如X射线成像和指纹感知，在技术上已经变得可行，并吸引了严重的工业利益和投资。但是，尚未完全解决的技术挑战之一是运营可靠性：尽管取得了重大进展，但可以说，OLEDS和有机太阳能电池都不符合基于无机半导体技术的令人印象深刻的可靠性，这些技术在许多情况下超过了产品生命周期的5 - 10年。同样，在长时间的运行期间，OFET的阈值电压稳定性不如氧化物或多晶硅晶体管的阈值稳定性，在延长期间，在连续驾驶过程中表现出小于0.5V的阈值电压偏移。拟议的项目是基于最近的技术突破：我们发现，通过在聚合物膜中添加小分子添加剂，可以大大增加最先进的高迁移率聚合物晶体管的操作稳定性（Nikolka等人，自然材料16，356（2017））。我们建议将这种技术用于添加稳定的聚合物（ASP）膜成可扩展的制造技术，该技术满足了各种应用程序的工业制造要求。我们的ASP技术有可能将共轭聚合物的性能和可靠性显着提高到可以满足既定的无机半导体实现的可靠性要求的水平。

项目成果

Single Atom Selenium Substitution-Mediated P-Type Doping in Polythiophenes toward High-Performance Organic Electronics and Thermoelectrics

单原子硒取代介导的聚噻吩 P 型掺杂可实现高性能有机电子和热电学

• DOI: 10.1002/aelm.202200053
• 发表时间: 2022
• 期刊: Advanced Electronic Materials
• 影响因子: 6.2
• 作者: Chen C

Observation of Weak Counterion Size Dependence of Thermoelectric Transport in Ion Exchange Doped Conducting Polymers Across a Wide Range of Conductivities

• DOI: 10.1002/aenm.202202797
• 发表时间: 2023-01-10
• 期刊: ADVANCED ENERGY MATERIALS
• 影响因子: 27.8
• 作者: Chen, Chen;Jacobs, Ian E.;Sirringhaus, Henning
• 通讯作者: Sirringhaus, Henning

Dynamic self-stabilization in the electronic and nanomechanical properties of an organic polymer semiconductor.

有机聚合物半导体的电子和纳米机械特性的动态自稳定。

• DOI: 10.17863/cam.86141
• 发表时间: 2022
• 作者: Dobryden I

Charge transport in high-mobility conjugated polymers and molecular semiconductors

• DOI: 10.1038/s41563-020-0647-2
• 发表时间: 2020-04-15
• 期刊: NATURE MATERIALS
• 影响因子: 41.2
• 作者: Fratini, Simone;Nikolka, Mark;Sirringhaus, Henning
• 通讯作者: Sirringhaus, Henning