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Polarizaciones altas, múltiples y no volátiles en el híbrido orgánico-inorgánico [CH3) 3 CH2 Cl) N]2 InCl5 H2 O para
Jiali Lu1,2, Rui Luo3, Junyan Zhou1
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Journal of the American Chemical Society
|December 26, 2023
Resumen
Los investigadores desarrollaron un nuevo material híbrido, (CETM) 2InCl5·H2O, que logró una polarización no volátil récord para los memocapacitores avanzados. Este avance promete sinapsis artificiales más eficientes en la computación neuromórfica.
Área de la Ciencia:
- Ciencias de los materiales
- Física de la materia condensada
- Nanotecnología
Sus antecedentes:
- Los dieléctricos de alta polarización son cruciales para los memocapacitores en la computación neuromórfica.
- Los ferroeléctricos convencionales tienen limitaciones en la polarización e histeresis, lo que dificulta el rendimiento.
Objetivo del estudio:
- Desarrollar un nuevo material híbrido orgánico-inorgánico para memocapacitores de alto rendimiento.
- Para lograr polarizaciones altas, no volátiles y múltiples para sinapsis artificiales.
Principales métodos:
- Síntesis del nuevo híbrido orgánico-inorgánico (CETM) 2InCl5·H2O.
- Caracterización utilizando bucles de campo eléctrico de polarización, espectroscopia de impedancia electroquímica y mediciones de corriente dependientes del tiempo.
- Los primeros cálculos de principios para aclarar el mecanismo.
Principales resultados:
- Se logró una polarización no volátil récord de más de 30.000 μC/cm2 a temperatura ambiente.
- El material exhibe múltiples estados no volátiles dependientes de los parámetros de voltaje de CA.
- La migración de protones fue identificada como el mecanismo detrás del comportamiento del memcondensador.
Conclusiones:
- El nuevo material híbrido ofrece una vía prometedora para los memocapacitores de próxima generación.
- Aprovechar la migración iónica en híbridos orgánico-inorgánicos puede conducir a dispositivos informáticos neuromórficos avanzados.
- Los hallazgos abren nuevas vías para el diseño de materiales con propiedades de polarización a medida.
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