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基于Alq3的有机电致发光器件温度特性的研究
  • 期刊名称：科学通报，52(21) 2007.11
  • 时间：0
  • 分类：TN383.1[电子电信—物理电子学]
  • 作者机构：[1]电子科技大学光电信息学院,电子薄膜与集成器件国家重点实验室,成都610054
  • 相关基金：国家杰出青年科学基金（批准号：60425101）、教育部新世纪优秀人才计划（批准号：NCET-06-0812）和电子科技大学中青年学术带头人计划（批准号：060206）资助项目
  • 相关项目：传感技术及其系统
关键词： 有机电致发光器件, 温度, 载流子迁移率, 电流传导机制, Alq3
中文摘要：

以真空热蒸镀的方法制备了基于八羟基喹啉铝（Alq3）为发光层的单层和双层有机电致发光器件，测试了器件在不同温度条件下其电致发光特性的变化，研究了器件性能的温度特性，详细分析了温度对器件电流传导机制的影响．结果表明，器件的电流．电压特性与陷阱电荷限制电流理论的预测很好地符合．此外，由于有机层内载流子迁移率和浓度都随着温度的增加而增加，导致Alq3器件的电流随温度单调上升．不同温度下Alq3器件的电流传导机制没有改变，但是电流．电压关系式中的幂指数m随温度无规则变化．由于温度上升会引起Alq3发光性能衰减，所以器件的发光亮度随温度略有上升，而发光效率随温度单调下降．电致发光光谱随温度上升出现微小的蓝移，其单色性的降低是来源于有机半导体材料本身的能级特征．

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传感技术及其系统
期刊论文 170 会议论文 24 著作 2
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