| 半花菁有序超薄膜热释电效应的产生机理 |
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| 引用本文： | 严 媚,马世红,刘丽英,王文澄,陈张海,刘普霖.半花菁有序超薄膜热释电效应的产生机理[J].物理学报,1998,47(11):1917-1922. |
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| 作者姓名： | 严 媚 马世红 刘丽英 王文澄 陈张海 刘普霖 |
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| 作者单位： | (1)复旦大学物理系三束材料改性国家重点实验室,上海 200433; (2)中国科学院红外物理国家重点实验室 |
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| 基金项目： | 国家自然科学基金（批准号：19704004）和国家攀登计划资助的课题. |
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| 摘 要： | 利用Langmuir-Blodgett技术制备的半花菁有机分子超薄膜中存在电滞回线和热释电效应．通过电荷积分法测量其热释电系数在室温下约为12μC·m-2·K-1．利用偏振红外吸收光谱研究了有机超薄膜中半花菁分子取向结构随温度变化的关系．讨论了热释电性产生的微观机理.
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| 关 键 词： | 热释电效应 超薄膜 LB膜 半花菁有机分子 |
| 收稿时间： | 4/6/1998 12:00:00 AM |
THE MECHANISM OF PYROELECTRIC EFFECT IN ULTRATHIN MOLECULAR ORGANIZED FILMS OF HEMICYANINE DYES |
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| YAN MEI,MA SHI-HONG,LIU LI-YING,WANG WEN-CHENG,CHEN ZHANG-HAI and LIU PU-LIN.THE MECHANISM OF PYROELECTRIC EFFECT IN ULTRATHIN MOLECULAR ORGANIZED FILMS OF HEMICYANINE DYES[J].Acta Physica Sinica,1998,47(11):1917-1922. |
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| Authors: | YAN MEI MA SHI-HONG LIU LI-YING WANG WEN-CHENG CHEN ZHANG-HAI and LIU PU-LIN |
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| Abstract: | The ultrathin molecular organized films of hemicyanine dyes were prepared by langmuir-Blod-gett technique. The films show ferroelectric hysteresis loop and pyroelectric effect. The pyroelectric coefficient measured by the method of integrated charges is 12μC·m-2·K-1 at 300 K, and the relationship between the orientaton of DAEP in the films and temperature was studied by polarized FTIR spectroscopy. The microscopic mechanism of pyroelectricity in the films was discussed. |
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