Improved color purity of blue organic light-emitting diodes (BOLED) with double hole-transporting (DHT) structure and acetate materials
| Autor: | zong-jin wu, 吳宗晉 |
|---|---|
| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 Organic light-emitting Diode (OLED) emits light itself. It owns many advantages of optical-electronic characteristics as compared with thin films transistor-liquid crystal display (TFT-LCD). In order to achieve the requirement for full color flat panel display, the three primary colors which are red, green, blue (R, G, B) with high luminance, high current efficiency and high color purity are important study of research and development for OLED.In our experiment, the major materials are NPB, CBP, DPVBi, Alq3, LiF and (CH3COOH)2Zn. The materials of NPB and CBP are used as hole transporting layer. DPVBi is blue emission layer. Alq3 is electron transporting layer. LiF and (CH3COOH)2Zn, are used as electron injection layer.The blue light emission with short wavelength plays an important role in color conversion method (CCM) of full color technology. In the study, we improve and research on color purity of blue OLED by various thicknesses of organic layer. In addition, we research the influence of the different thickness of double-CBP layers as hole-transporting layers. In order to improve the current density and luminance, we add extra acetate layer to the device. It can improve the blue color purity, current density and luminance. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|