Study on ITO/Ag/ITO multilayer film as the electrode of organic light-emitting diodes

Lei Zhang; Jun-sheng Yu; Jian Zhong; Hong Wang; Ya-dong Jiang; Jian-fang Deng

doi:10.1117/12.783346

16 November 2007 Study on ITO/Ag/ITO multilayer film as the electrode of organic light-emitting diodes

Lei Zhang, Jun-sheng Yu, Jian Zhong, Hong Wang, Ya-dong Jiang, Jian-fang Deng

Proceedings Volume 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 67222Q (2007) https://doi.org/10.1117/12.783346
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

ITO (Indium tin oxide) film has been widely used as transparent electrode for organic light-emitting diodes (OLEDs). Higher conductibility and transparency, smoother surface morphology and higher work function are indispensable for the fabrication of high performance OLEDs, especially for transparent and double-side devices. Therefore, it is necessary to deposit ITO films at low temperature to protect the organic films of OLED from damaging during fabrication process. In this work a novel transparent electrode ITO/Ag/ITO was introduced to the OLED device. This kind of transparent electrode was used to reduce the sheet resistance of electrode and raise the performance of OLED device. By theoretical simulation, the optimum film thickness of three organic layers was obtained. ITO and Ag films were prepared by DC magnetron sputtering at room temperature. The transparent electrode with low sheet resistance of 6.3 Ω/sq and high transmittance of 87% at 550 nm was achieved. OLED consisted of this multilayer film was developed. The relationship between the thickness of Ag film and photoelectric performance of multilayer films was also discussed.

Citation Download Citation

Lei Zhang, Jun-sheng Yu, Jian Zhong, Hong Wang, Ya-dong Jiang, and Jian-fang Deng "Study on ITO/Ag/ITO multilayer film as the electrode of organic light-emitting diodes", Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 67222Q (16 November 2007); https://doi.org/10.1117/12.783346

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KEYWORDS

Multilayers

Organic light emitting diodes

Silver

Transmittance

Electrodes

Resistance

Sputter deposition

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