Highly efficient ITO-free organic light-emitting diodes employing a roughened ultra-thin silver electrode

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• 作者：Gautham Kumar^a ; Yan-De Li^a ; Sajal Biring^a ; ^c ; Yi-Nan Lin^a ; Shun-Wei Liu^a ; ^c ; ^{swliu@mail.mcut.edu.tw} ; Chih-Hao Chang^b ; ^{chc@saturn.yzu.edu.tw}
• 关键词：ITO-free ; Exciplex host ; Ag ; OLED ; HAT-CN ; Transparent electrode ; Laser patterning
• 刊名：Organic Electronics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：42
• 期：Complete
• 页码：52-58
• 全文大小：1643 K
• 卷排序：42

文摘

We demonstrated an efficient organic light-emitting diodes using an ultra-thin silver electrodes. ITO-free and exciplex-forming phosphorescent OLED exhibited the luminance of 128,000 cd/m2 at driving voltage of 8 V. Roughened Ag anode had a transmittance value of 65% at wavelength of 532 nm and a low sheet resistance of 3.9 Ω/sq. The buffer layer of HAT-CN possibly used to serve the workfunction of roughened Ag anode electrode with 5.4 eV. The viewing angle of proposed ITO-free PhOLED showed a Lambertian emission profile.