In this work, chemical treatment was performed on the surfaces of two types of indium tin oxides (ITOs) with different physical properties. The effects of the chemical treatment on the physical parameters of the ITOs, and on the efficiency of the organic light emitting diodes (OLEDs) fabricated on the ITOs, were then examined. The ITO substrates were characterized via X-ray diffraction, atomic force microscopy, optical absorption, and electrical resistance measurement. The results showed that the chemical treatment exerted no significant changes on the structure and transparency of the wavelength of the light emitted from Alq 3 ; however, the treatment improved the morphology and resistance of the ITOs examined. To serve the research purpose, the ITOs were first characterized, and then, the OLEDs were fabricated so that they would have a structure of Glass/ITO/PEDOT:PSS/Alq 3 /Al. The OLEDs were characterized current density, resistance, power, and irradiance as a function of the voltages. The results of the study showed decreases in the turn-on voltage (from 5.5 to 4 V for one of the OLEDs and 7 to 6 V for the other), resistance and power (for one of the ITOs), and irradiance (for one of the ITOs) due to the chemical treatment.

中文翻译：

---

化学处理对 OLED 器件 ITO 特性和性能的影响

在这项工作中，对两种具有不同物理性质的氧化铟锡 (ITO) 的表面进行了化学处理。然后检查化学处理对 ITO 物理参数的影响，以及对在 ITO 上制造的有机发光二极管 (OLED) 的效率的影响。通过 X 射线衍射、原子力显微镜、光吸收和电阻测量对 ITO 基板进行表征。结果表明，化学处理对Alq 3 发出的光的波长结构和透明度没有明显变化；然而，处理改善了所检查的 ITO 的形态和电阻。为了达到研究目的，首先对 ITO 进行了表征，然后，OLED 的制造使其具有玻璃/ITO/PEDOT:PSS/Alq 3 /Al 的结构。OLED 的特征在于电流密度、电阻、功率和辐照度与电压的关系。研究结果表明，开启电压（其中一个 OLED 的从 ​​5.5 V 到 4 V，另一个 7 V 到 6 V）、电阻和功率（对于其中一个 ITO）以及辐照度（对于一个ITO）由于化学处理。