1. 太原理工大学 新材料工程技术研究中心,山西 太原,030024
2. 太原理工大学 新材料界面科学与工程教育部重点实验室,山西 太原,030024
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李菀丽, 武聪伶, 苗艳勤等. 二氧化钛改性8-羟基喹啉铝对有机电致发光器件抗老化性能的提高[J]. 发光学报, 2015,36(2): 219-224
LI Wan-li, WU Cong-ling, MIAO Yan-qin etc. TiO<sub>2</sub> Doped Alq<sub>3</sub> as Emitting Layer to Improve The Anti-aging Performance of OLED[J]. Chinese Journal of Luminescence, 2015,36(2): 219-224
李菀丽, 武聪伶, 苗艳勤等. 二氧化钛改性8-羟基喹啉铝对有机电致发光器件抗老化性能的提高[J]. 发光学报, 2015,36(2): 219-224 DOI: 10.3788/fgxb20153602.0219.
LI Wan-li, WU Cong-ling, MIAO Yan-qin etc. TiO<sub>2</sub> Doped Alq<sub>3</sub> as Emitting Layer to Improve The Anti-aging Performance of OLED[J]. Chinese Journal of Luminescence, 2015,36(2): 219-224 DOI: 10.3788/fgxb20153602.0219.
以二氧化钛改性8-羟基喹啉铝复合材料(TiO,2,-Alq,3,)为发光层制备了有机电致发光器件(OLED).在器件未封装条件下,复合材料TiO,2,-Alq,3,制备的器件较纯Alq,3,制备的器件抗老化性能有所提高.通过化学计量比调控,当钛酸四丁酯与硫酸铝的投料比为1:10时制备的复合材料TiO,2,-Alq,3,可获得抗老化性能最优的OLED器件.在空气中老化48 h后,该器件亮度仍保持在起始亮度的89.7%,电流效率保持在起始值的76.6%,而纯Alq,3,制备的OLED器件在同样测试条件下已失活.
Composite material titanium dioxide doped tris(8-hydroxyquinoline)-aluminium (TiO,2,-Alq,3,) was applied in organic lighting emitting diodes (OLED) as emitting material. Without encapsulation, it is found that TiO,2,-Alq,3, as emitting layer in OLED exhibits significantly improved anti-aging performance than that of the pure Alq,3,-based OLED. It can be attributed to the introduced of TiO,2, which has good photochemical stability and the absorption ability in UV,etc., The OLED with optimized anti-aging performance was obtained after tuning the molar ration of reactants tetrabutyl titanate and aluminium sulfate to 1:10. After aging 48 h in the air, the luminance and current efficiency of this optimized OLED still remained in the initial state of 89.7% and 79.6%, respectively. This work paves a new way to improve the anti-aging performance of OLED by modifying the emitting materials.
Alq3TiO2复合材料OLED抗老化
Alq3TiO2composite materialsOLEDanti-aging
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