Recently, co founder of Beijing Zaicheng Technology Co., Ltd. (hereinafter referred to as Zenith nano Zaicheng Technology) The team led by Professor L. Jay Guo from the University of Michigan in the United States published "Tackling light trapping in organic light emitting diodes by complete elimination of waveguide modes" in the academic journal Science. This work was carried out with the support of Zenith Nano Chengcheng Technology at the University of Michigan's Lurinaxing manufacturing facility.
This is another significant achievement of Zenith Nano Carrier Technology's superconducting electrode materials in the OLED field: utilizing Zenith Nano Carrier Technology's core metamaterials has greatly improved the luminous efficiency of OLEDs, providing innovative solutions for the development of OLED display fields.
The traditional waveguide mode removal method for organic light-emitting diodes (OLEDs) is usually not scalable and increases manufacturing complexity and cost. The oxide free steel tin transparent anode technology improves efficiency without affecting the performance of other devices. However, previous work lacked rigorous analysis.
Chang yeong Jeong, A doctoral student in electronics and computer engineering, working in Professor Jay Guo's laboratory on ultra-thin thin films based OLED (Figure: Robert Coulius/Michigan engineer).
The research team used an ultra-thin film as a transparent electrode and conducted a systematic modal analysis of OLED. It was pointed out that by designing an OLED structure with a thickness lower than the waveguide mode cutoff, the waveguide mode can be completely eliminated. Experimental verification of waveguide modes in organic optical waveguides was conducted using refractive index matching solution and prisms. The negative dielectric constant.
The research team systematically studied the optical power distribution of OLEDs based on ultra-thin films, and stated in this article that by optimizing organic stacking and ultra-thin Ag anodes, waveguide modes can be completely eliminated. According to this article, this is the first systematic study to demonstrate the complete removal of waveguide modes using thin film electrode technology through detailed analysis and experiments. This simple and effective method is compatible with commonly used manufacturing processes and enhances the EQE of OLEDs without affecting other device characteristics.
Zenith Nano Zacheng Technology was established in 2018 and is a research and development and manufacturing enterprise of nano new materials based on flexible conductive films. Zenith nano's core product is a flexible nano transparent conductive film jointly developed by Beijing Collaborative Innovation Research Institute and the University of Michigan (UMich) in the United States.