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Un ferroeléctrico molecular multiaxial con la temperatura de Curie más alta y la conmutación de polarización más
Yuan-Yuan Tang1, Peng-Fei Li1, Wan-Ying Zhang1
1Ordered Matter Science Research Center, and Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University , Nanjing 211189, P. R. China.
Journal of the American Chemical Society
|September 5, 2017
Resumen
Una nueva película delgada ferroeléctrica molecular, [Hdabco] [ReO4], ofrece un rendimiento superior al poli (fluoruro de vinilideno) para la electrónica orgánica. Muestra una alta temperatura de Curie y velocidades de conmutación rápidas, lo que la hace ideal para aplicaciones avanzadas de almacenamiento de datos.
Área de la Ciencia:
- Ciencias de los materiales
- Productos electrónicos orgánicos
- Materiales ferroeléctricos
Sus antecedentes:
- El fluoruro de polivinilideno (PVDF) es un ferroeléctrico orgánico clásico para el almacenamiento de datos.
- PVDF se enfrenta a limitaciones en la cristalinidad, el campo coercitivo y la estabilidad térmica para la integración a gran escala.
- Los ferroeléctricos moleculares ofrecen una clase alternativa de materiales ferroeléctricos orgánicos.
Objetivo del estudio:
- Para investigar el potencial de [Hdabco] [ReO4] como una película delgada ferroeléctrica molecular.
- Evaluar [Hdabco][ReO4] como una alternativa viable al PVDF para las aplicaciones de almacenamiento de datos.
- Para caracterizar las propiedades ferroeléctricas de [Hdabco][ReO4].
Principales métodos:
- Fabricación de películas delgadas ferroeléctricas moleculares [Hdabco][ReO4].
- Medición de la temperatura de Curie.
- Evaluación de la velocidad de conmutación de polarización.
- Cuantificación de la polarización remanente y el voltaje coercitivo.
Principales resultados:
- [Hdabco][ReO4] exhibe la temperatura de Curie más alta (499.6 K) entre los ferroeléctricos moleculares.
- Logró la velocidad de conmutación de polarización más rápida (100 kHz) para ferroeléctricos moleculares.
- Se ha demostrado una gran polarización remanente (~ 9 μC/cm2) y bajos voltajes coercitivos (~ 10 V).
- Muestra una naturaleza ferroeléctrica multiaxial única.
Conclusiones:
- [Hdabco][ReO4] es una alternativa ferroeléctrica molecular prometedora para el PVDF.
- Sus propiedades son adecuadas para la próxima generación de dispositivos flexibles, portátiles y biónicos.
- Ofrece un rendimiento mejorado para aplicaciones avanzadas de almacenamiento electrónico de datos orgánicos.
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