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Transistores e inversores orgánicos de bajo voltaje con efecto de campo activados por polímeros reticulados
Myung-Han Yoon1, He Yan, Antonio Facchetti
1Department of Chemistry and the Materials Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, USA.
Journal of the American Chemical Society
|July 21, 2005
Resumen
Los investigadores desarrollaron nuevos dieléctricos de mezcla de polímero ultradelgado para transistores orgánicos de película delgada (OTFT) de alto rendimiento. Estos materiales permiten un funcionamiento eficiente y de baja tensión y el procesamiento de soluciones para electrónica flexible.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Electrónica orgánica y electrónica orgánica.
- Química de Polímeros La Química de Polímeros es la química de los polímeros.
Sus antecedentes:
- Los transistores orgánicos de película delgada (OTFT) de alto rendimiento requieren dieléctricos de puerta avanzados.
- Los requisitos clave incluyen un excelente aislamiento, funcionamiento a baja tensión y procesamiento de la solución.
- La flexibilidad mecánica y la compatibilidad con diversos materiales son cruciales para las aplicaciones de dispositivos.
Objetivo del estudio:
- Desarrollar novedosos dieléctricos de mezcla de polímero con recubrimiento de espín para OTFT.
- Para lograr dieléctricos ultrafinos (<20 nm) con propiedades aislantes y capacitivas superiores.
- Para permitir la fabricación OTFT de baja tensión y flexible.
Principales métodos:
- Fabricación de dieléctricos de mezcla de polímeros reticulados mediante recubrimiento de espín.
- Caracterización de las propiedades dieléctricas, incluida la corriente de fuga y la capacidad.
- Integración de dieléctricos en dispositivos OTFT y inversores complementarios.
Principales resultados:
- Dieléctricos de mezcla de polímeros ultrafinos (<20 nm) con excelentes propiedades aislantes (aprox. 10(-8) Acm(-2) de pérdida).
- Capacidad alta de la puerta (hasta aproximadamente. 300 nF cm(-2)) que permite el funcionamiento de baja tensión.
- Se han demostrado capas dieléctricas uniformes en grandes áreas (aprox. 150 cm(2)) con buena adherencia y capacidad de patronización.
- Fabricación de inversores complementarios que funcionan en 2 V. Fabricación de inversores complementarios que funcionan en 2 V.
Conclusiones:
- Los dieléctricos de mezcla de polímeros desarrollados cumplen con los estrictos requisitos para OTFT de alto rendimiento.
- Estos materiales facilitan una electrónica flexible eficiente, de bajo voltaje y procesada en solución.
- Los nuevos dieléctricos muestran una promesa significativa para aplicaciones electrónicas orgánicas avanzadas.
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