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Sinergia entre la fotoluminiscencia y el transporte de carga lograda mediante el ajuste fino de las columnas

Dafei Yuan¹, Mohammad A Awais¹, Valerii Sharapov¹

¹Department of Chemistry and the James Franck Institute, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States.

Journal of the American Chemical Society

|March 23, 2021

Resumen

Los investigadores desarrollaron nuevos polímeros para la electrónica avanzada. El copolímero TPTQ-F muestra una alta movilidad de carga y fluorescencia, mejorando los transistores orgánicos emisores de luz (OLET) con una excelente eficiencia.

Área de la Ciencia:

Ciencias de los materiales
Productos electrónicos orgánicos
Química de los polímeros

Sus antecedentes:

Los materiales poliméricos de alto rendimiento son cruciales para los transistores orgánicos emisores de luz (OLET) y los láseres orgánicos.
Las limitaciones actuales en los principios de diseño dificultan el desarrollo de polímeros con fuerte fluorescencia y alta movilidad de carga ambipolar.

Objetivo del estudio:

Desarrollar nuevos polímeros semilader con propiedades luminiscentes y de transporte de carga adaptadas.
Establecer principios de diseño para materiales electrónicos orgánicos de alto rendimiento.

Principales métodos:

Copolimización de aceptores débiles (TPTQ o TPTI) con donantes débiles (fluoreno (F) o carbazol (C)).
Síntesis y caracterización de una serie de polímeros semilader, centrándose en el copolímero TPTQ-F.
Fabricación y ensayo de dispositivos OLET multicapa procesados con solución.

Principales resultados:

El copolímero TPTQ-F exhibió una mayor planaridad, alta cristalinidad y una agregación optimizada entre cadenas.
TPTQ-F demostró una alta movilidad de carga ambipolar y un alto rendimiento cuántico fotoluminiscente.
Los dispositivos OLET basados en TPTQ-F lograron una excelente eficiencia cuántica externa (EQE) del 5,3%.

Conclusiones:

El polímero semillader desarrollado, TPTQ-F, ofrece una vía prometedora para dispositivos electrónicos orgánicos de alto rendimiento.
La planaridad mejorada y la agregación controlada son factores clave para lograr propiedades superiores de transporte de carga y luminiscencia.
Este trabajo proporciona información valiosa sobre los principios de diseño de polímeros fluorescentes avanzados en la electrónica orgánica.

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