-
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.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.
计量
- 文章访问数: 6455
- PDF下载量: 708
- 被引次数: 0
下载:
