Sb₂O₃/Ag/Sb₂O₃ Multilayer Transparent Conducting Films For Ultraviolet Organic Light-emitting Diode

A novel UV transparent conducting films based on Sb₂O₃/Ag/Sb₂O₃ (SAS) structure, which were prepared by an electron-beam thermal evaporation at room temperature. This SAS exhibits excellent electrical, optical and stable properties. Especially for UV region, the SAS has high transmittance of 80% at 306 nm and 92% at 335 nm, meanwhile achieving low sheet resistance ( ≤ 10 Ω sq^-1). The UV OLED based on the SAS show competitive device performance. The UV OLED obtains the peak of UV electroluminescence at 376 nm and shows a very high maximum EQE of 4.1% with the maximum output power density of 5.18 mW cm^-2. These results indicate that the potential of SAS applications in deep UV transparent electrodes and large-scale flexible transparent electronics.