Experimental Study on Transparent Polymer Light Emitting Diodes Using LiF/Ag/Indium Tin Oxide Cathode

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概要

• 論文の詳細を見る

• In this work, we successfully demonstrate the transparent polymer light emitting diodes (PLEDs) with LiF/Ag/indium tin oxide (ITO) cathode that can efficiently improve the operation voltage and enhance light output. The devices with Ag insertion layer all perform the lower turn-on voltage in the range from 4.8 to 5.8 V at 1 mA/cm2. Furthermore, these devices all show the superior luminance than the device without Ag buffer layer. However, the transparency of cathode is strongly dependent on the Ag thickness. Devices with a 1 nm-thick layer Ag exhibits a higher transparency than other devices with Ag layers, thus showing the highest luminance from the top cathode. In addition, the Ag insertion layer also plays a role to prevent the emitting layer from sputtering bombard damage. According to X-ray photoemission spectroscopy (XPS) measurement, it is observed that the Ag layer will sufficiently protect the emitting layer from sputtering penetration damage under a sputtering power of 50 W. In this paper, we present a practical structure for realizing transparent PLEDs.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2007-04-30

著者

• Teng Chao-wen

  Department And Graduate Institute Of Electronic Engineering Chang Gung University

• Liu Kou-Chen

  Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taiwan

• Chou Shih-Hsien

  Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taiwan

• Lu Yen-Hsun

  Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taiwan

• Tsai Yao-Chou

  Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taiwan

関連論文

• Experimental study of Ag/LiF/PFO interface for Top Emission PLEDs by synchrotron radiation photoemission spectroscopy
• Wet Etching Characterization of InSb for Thermal Imaging Applications
• Experimental Study on Transparent Polymer Light Emitting Diodes Using LiF/Ag/Indium Tin Oxide Cathode

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