以溶液製程製作高效率大面積白色有機發光二極體

Using Solution Process to Manufacture High-Efficiency Large-Area White Organic Light-Emitting Diodes

戴燊毓(Shen-Yu Dai)

指導教授 ： 蔡裕勝

國立虎尾科技大學/電機資訊學院/光電工程系光電與材料科技碩士班/碩士(2016年)

摘要

本論文以研究利用溶液式製程製作高效率大面積白色有機發光二極體，主要研究重點為提高大面積OLED元件效率，以達到大面積照明需求。其元件發光面積為3.4cm × 3.4cm，首先調配出白色發光層溶液，發光層為磷光主體材料26DCzppy，摻雜磷光藍色及螢光橘黃色材料FIrpic、Ey53，製作雙波段白光元件，在橘黃色螢光 (Ey53) 摻雜材料濃度0.5 %，在電流密度5 mA/cm2下，效率可達5.54 cd/A，接著將電洞傳輸層加入P型摻雜材料 (F4-TCNQ ) 2 %，將其比例、厚度做最佳化調整，提升元件亮度及效率，在電流密度5 mA/cm2下，效率提升至14.66 cd/A，電子傳輸層厚度 (TPBi) 最佳化後，在電流密度5 mA/cm2下，效率提升至14.9 cd/A。其元件結構為: ITO/spin-PEDOT:PSS(55nm)/spin-TCTA:F4-TCNQ(35nm)/spin-26DCzppy:FIrpic:Ey53(40nm)/evap.-TPBi(30nm)/LiF(0.8nm)/Al(150nm)。

關鍵字

溶液製程 ； 白色有機發光二極體 ； P型摻雜 ； 大面積 ； 高效率

並列摘要

This thesis of research is using solution process to manufacture high-efficiency large-area white organic light-emitting diodes (OLED). The main focus is to improve the efficiency of large-area OLED device in order to achieve a large area lighting needs. Device emitting area 3.4cm × 3.4cm. First, the deployment of a white light emitting layer solution, Emissive layer using phosphorescence host materials 26DCzppy, using doping blue phosphorescence materials Firpic and orange fiuorescent materials Ey53, manufacture of dual-band white device, dopant concentration of 0.5 % the fluorescent orange material (Ey53), device the current efficiency of 5.54 cd/A at current density 5 mA/cm2. Next, P-type dopant material (F4-TCNQ ) 2 % to hole transport layer, proportion and thickness optimized adjustment, enhanced the luminance and efficiency of the device, device the current efficiency of 14.66 cd/A at current density 5 mA/cm2. The thickness optimizing after of the electron transport layer (TPBi), device the current efficiency of 14.9 cd/A at current density 5 mA/cm2. Device structure: ITO / spin-PEDOT:PSS (55nm) / spin-TCTA:F4-TCNQ (35nm) / spin-26DCzppy:FIrpic:Ey53 (40nm) / evap.-TPBi (30nm) / LiF (0.8nm) /Al (150nm).

並列關鍵字

Solution process ； White Organic Light-Emitting Diodes ； P-type dopant ； Large-Area ； High efficiency

參考文獻

[1]M. Pope,H. Kallmann,P. Magnante,”Electroluminescence in Organic Crystals”, J. Chem. Phy., vol. 38, p2024,1963.

[2]Tang. C. W, Vanslyke, S. A, ” Organic Electroluminescent diodes ” , Appl. Phys. Lett., vol. 51, p 913,1987.

[3]C. W. Joo, K. S. Yook, S. O. Jeon, J. Y. Lee, “Improved efficiency in solution processed green phosphorescent organic light-emitting diodes using a double layer emitting structure fabricated by a stamp transfer printing process”, Organic Electronics 10 , pp.978–981, 2009.

[6]K.J. Choi, J.Y. Lee, J. Park, Y.S. Seo, “Multilayer slot-die coating of large-area organic light-emitting diodes”, Organic Electronics 26, pp.66–74, 2015.

[7]H.W. Chang, H.F. Meng, S.F. Horng, H.W. Zan, “ITO-free large-area top-emission organic light-emitting diode by blade coating”, Synthetic Metals 212, pp.19–24, 2016.