用于低成本高效有机发光二极管的喷墨打印多层结构

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Marco Cinquino , Marco Pugliese , Carmela Tania Prontera , Fabrizio Mariano , Alessandra Zizzari , Gabriele Maiorano , Antonio Maggiore , Riccardo Manfredi , Chiara Mello , Iolena Tarantini , Giuseppe Gigli , Vincenzo Maiorano
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引用次数: 0

摘要

喷墨打印被认为是制造有机发光二极管(OLED)的关键技术,但实现完全可喷墨打印的 OLED 结构仍是一项挑战。在此,我们提出了喷墨打印多层结构(即阳极/空穴注入层(HIL)/电子阻挡层(EBL)/发光层(EML))的有机发光二极管的制造方法,通过适当开发新的 HIL 和 EBL 油墨来实现均匀一致的打印薄膜。在制造的多层器件中,EBL 的溶解过程发生在印刷 EML 的过程中,会产生模糊的界面,从而使器件性能达到最大电流效率,ITO 和印刷聚合物阳极的最大电流效率分别为 20 cd/A 和 7 cd/A。为了简化器件结构并模仿这种模糊界面的形成,我们提出了另一种印刷多层结构(即阳极/印刷 HIL/ 印刷 EBL:EML),在使用 ITO 和聚合物阳极时,最大电流效率分别达到 13 cd/A 和 6 cd/A。这些结果体现了简化制造工艺与实现良好电光特性之间的折衷,从而向制造完全喷墨印刷的无 ITO OLED 又迈进了一步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inkjet-printed multilayer structure for low-cost and efficient OLEDs

Inkjet printing is considered a key technology in the fabrication of organic light-emitting diodes (OLEDs), but achieving a fully inkjet-printable OLED structure is still a challenge. Here, we propose the fabrication of OLEDs with an inkjet-printed multilayer structure (i.e. anode/hole injection layer (HIL)/electron blocking layer (EBL)/emitting layer (EML)) by properly developing new HIL and EBL inks to achieve uniform and homogeneous printed thin films. In the fabricated multilayer device, the dissolution process of the EBL, which occurs during the printing of the EML, creates a blurred interface, resulting in device performance that achieves maximum current efficiencies of 20 cd/A and 7 cd/A with ITO and printed polymeric anode, respectively. With the aim of simplifying the structure of the device and mimicking the formation of such a blurred interface, another printed multilayer structure (i.e. anode/printed HIL/printed EBL:EML) was proposed, achieving maximum current efficiencies of 13 and 6 cd/A with ITO and polymeric anode, respectively. Such results represent a compromise between simplifying the fabrication process and achieving good electro-optical properties and thus represent a further step towards the fabrication of a fully inkjet-printed ITO-free OLED.

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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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