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有序组装超薄膜热释电性能的优化研究
引用本文:马世红,严媚,李淑红,陆兴泽,王根水,诸君浩,王文澄.有序组装超薄膜热释电性能的优化研究[J].物理学报,2003,52(1):197-201.
作者姓名:马世红  严媚  李淑红  陆兴泽  王根水  诸君浩  王文澄
作者单位:(1)红外物理国家重点实验室,中国科学院上海技术物理研究所,上海 200083; (2)先进光子学材料与器件国家重点实验室,复旦大学光科学与工程系,上海 200433; (3)先进光子学材料与器件国家重点实验室,复旦大学物理学系,上海 200433
基金项目:国家自然科学基金(批准号:19704004,10274014)、上海市教育发展基金和上海市教育委员会“曙光计划”项目、教育部留学回国人员基金、中科院红外物理国家重点实验室资助的课题
摘    要:报道两亲性染料半花菁(DAEP)与隔层材料氮冠醚(NC)交替LB膜的热释电效应以及掺杂金属离子(Ba2+)对LB膜热释电性能的影响.发现所测样品的热释电系数p高达58μCm-2K-1;在频率为1kHz—100kHz的范围内,其εr和tanδ的数值分别为2.34—1.96和0.08—0.04.并讨论了不同成膜方式和掺杂金属离子Ba2+对LB膜热释电性能影响的物理机理.

关 键 词:LB膜(有序组装超薄膜)    热释电效应    介电性能
收稿时间:2002-04-27
修稿时间:2002年4月27日

Optimization of pyroelectric properties in ultrathin organized molecular films
Ma Shi-Hong,Yan Mei,Li Shu-Hong,Lu Xing-Ze,Wang Gen-Shui,Zhu Jun-Hao and Wang Wen-Cheng.Optimization of pyroelectric properties in ultrathin organized molecular films[J].Acta Physica Sinica,2003,52(1):197-201.
Authors:Ma Shi-Hong  Yan Mei  Li Shu-Hong  Lu Xing-Ze  Wang Gen-Shui  Zhu Jun-Hao and Wang Wen-Cheng
Abstract:Pyroelectric properties in alternating DAEP/NC Langmuir-Blodgett (LB) films and effects of incorporating the barium cations on pyroelectric behaviours have been investigated.The pyroelectric coefficient measured is found to be 58μCm-2K-1 at 300K.The dielectric properties have been measured and used to determine the figures of merit in thermal devices. Relative permittivity εr and dielectric loss values tanδ of pyroelectric films (in the range of 1kHz—100kHz) are 2.34—1.96 and 0.08—0.04, respectively. The effects of different deposition and incorporated metal ions on pyroelectric properties are also discussed in this paper. It is indicated that the alternating LB films is promising in the field of pyroelectricity and pyroelectric infrared detector.
Keywords:LB films (ordered ultrathin organized molecular films)  pyroelectric effects  dielectric characterization
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