MgF<sub>2</sub>改性Alq<sub>3</sub>纳米复合材料的制备及其对OLED抗老化性能的提高

引用本文: 李菀丽, 刘晓云, 苗艳勤, 杨君礼, 武聪伶, 李源浩, 郭鹍鹏, 王华, 许并社. MgF₂改性Alq₃纳米复合材料的制备及其对OLED抗老化性能的提高[J]. 物理化学学报, 2015, 31(9): 1780-1786. doi: 10.3866/PKU.WHXB201507151 shu

Citation: LI Wan-Li, LIU Xiao-Yun, MIAO Yan-Qin, YANG Jun-Li, WU Cong-Ling, LI Yuan-Hao, GUO Kun-Peng, WANG Hua, XU Bing-She. MgF₂ Modified Alq₃ Nanocomposite: Synthesis and Improvement of Anti-Aging Performance of OLED[J]. Acta Physico-Chimica Sinica, 2015, 31(9): 1780-1786. doi: 10.3866/PKU.WHXB201507151 shu

MgF₂改性Alq₃纳米复合材料的制备及其对OLED抗老化性能的提高

基金项目:
国家自然科学基金(61307029, 21101111, 61205179, 61307030) (61307029, 21101111, 61205179, 61307030)

教育部新世纪人才计划(NCET-13-0927) (NCET-13-0927)

科技部国际科技合作专项项目(2012DFR50460)资助 (2012DFR50460)

摘要:

提高有机电致发光器件(OLED)的稳定性和寿命是其市场化应用中需要解决的关键问题. 本文从提高发光材料自身的稳定性出发, 以Mg(CF₃COO)_2-x(CH₃COO)_x溶胶为前驱体, 将其与8-羟基喹啉铝(Alq₃)混合浓缩成糊状后, 300 ℃真空烧结, 经过MgF₂的生成和Alq₃的相变后, 形成了一系列Mg含量不同的具有超结构ε相的纳米复合材料Alq₃-MgF₂. 研究结果表明, 相比于纯Alq₃, Alq₃-MgF₂纳米复合材料制备的OLED可以很好地保持Alq₃的发光特性, 同时, 其抗老化性能得到显著提高. 特别是, Mg(CH₃COO)₂投料量为Alq₃的5% (摩尔分数)时,所得Alq₃-MgF₂纳米复合材料制备的器件抗老化性能最优, 在空气中老化72 h, 最大发光亮度仍保持在起始值的93.5%; 而Alq₃制备的OLED在空气中老化24 h后基本失活.

关键词:

English

MgF₂ Modified Alq₃ Nanocomposite: Synthesis and Improvement of Anti-Aging Performance of OLED

1.
1 Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, P. R. China;
2 Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Available Online: 06 September 2015
Fund Project:
国家自然科学基金(61307029, 21101111, 61205179, 61307030)

教育部新世纪人才计划(NCET-13-0927)

科技部国际科技合作专项项目(2012DFR50460)资助

Abstract:

From the viewpoint of practical application, enhancing the stability and lifetime of organic lightemitting diodes (OLED) is a al of research. A MgF₂ modified tris(8-hydroxyquinoline)-aluminum (Alq₃) hybrid superstructure was realized by collosol infiltration of a Mg(CF₃COO)_2-x(CH₃COO)_x precursor onto Alq₃. Alq₃ was well-dispersed in a large amount of Mg(CF₃COO)_2-x(CH₃COO)_x gel precursor solution, and after concentration a well-dispersed composite paste was produced. By heating the paste to 300 ℃, Alq₃ transformed to the superstructured ε-phase, and MgF₂ homogeneously incorporated because of od gel precursor infiltration and in situ deposition. The MgF₂-modified Alq₃ nanocomposite with superstructure has the same electroluminescence (EL) spectrum as Alq₃, with a dramatic improvement of the anti-aging performance of the OLED compared with Alq₃ because of the uniform assembly and well-defined structure. The effect of the amount of Mg(CH₃COO)₂ reactant on the OLED device anti-aging performance was investigated. The results showed that for the Alq₃-MgF₂ nanocomposite with 5% (molar fraction) of the Mg(CH₃COO)₂ reactant, the luminance remained at the initial state of 93.5% after aging for 72 h in air. However, the luminance of the Alq₃-based OLED almost disappeared after aging for 24 h under the same conditions. This work on inorganic material modified luminescent materials makes significant progress towards stable OLED.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

MgF₂改性Alq₃纳米复合材料的制备及其对OLED抗老化性能的提高

English

MgF₂ Modified Alq₃ Nanocomposite: Synthesis and Improvement of Anti-Aging Performance of OLED

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

MgF2改性Alq3纳米复合材料的制备及其对OLED抗老化性能的提高

English

MgF2 Modified Alq3 Nanocomposite: Synthesis and Improvement of Anti-Aging Performance of OLED

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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MgF₂改性Alq₃纳米复合材料的制备及其对OLED抗老化性能的提高

MgF₂ Modified Alq₃ Nanocomposite: Synthesis and Improvement of Anti-Aging Performance of OLED

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