Ultrathin Ag Transparent Conducting Electrode Structure for Next-Generation Optoelectronic Applications,ACS Applied Electronic Materials

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Ultrathin Ag Transparent Conducting Electrode Structure for Next-Generation Optoelectronic Applications
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-05-04 , DOI: 10.1021/acsaelm.0c00156
Subin Lee ₁ , Hyeong Woo Bae ₂ , Raju Lampande ₁ , Hye In Yang ₁ , Jun Sik Oh ₁ , Jang Hyuk Kwon ₁

Affiliation

In this study, we report an Ag-based multilayer structure as the bottom transparent conducting electrode (Ag-TCE) by sandwiching an ultrathin Ag film between commonly used organic hole injection layers for organic light-emitting diode (OLED) applications. This electrode structure fabricated using the same inline fabrication system as organic materials exhibited excellent electrical and optical properties. Ag-TCE showed a high transmittance and low sheet resistance of 79.2% and 17.6 Ω/□, respectively, for the ultrathin Ag layer (9 nm). The phosphorescent yellow OLED fabricated with optimized Ag-TCE showed a driving voltage of 4.0 V, an external quantum efficiency of 23.8%, and a current efficiency of 73.2 cd/A. The electroluminescence performance of Ag-TCE OLED is almost similar to the commonly used ITO electrode (25% and 73.2 cd/A). Based on these results, we demonstrate that this electrode structure is a promising alternative to the ITO electrode.

中文翻译：

用于下一代光电应用的超薄银透明导电电极结构

在这项研究中，我们通过将超薄的Ag膜夹在有机发光二极管（OLED）应用的常用有机空穴注入层之间，报道了一种基于Ag的多层结构作为底部透明导电电极（Ag-TCE）。使用与有机材料相同的在线制造系统制造的这种电极结构具有出色的电学和光学特性。Ag-TCE对超薄Ag层（9 nm）分别显示出79.2％和17.6Ω/□的高透射率和低薄层电阻。用优化的Ag-TCE制成的磷光黄色OLED的驱动电压为4.0 V，外部量子效率为23.8％，电流效率为73.2 cd / A。Ag-TCE OLED的电致发光性能几乎与常用的ITO电极相似（25％和73.2 cd / A）。

更新日期：2020-06-23

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