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
Abstract
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.
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.