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Dispositivos Electroluminiscentes Flexibles de Ultra-Gran Área a Escala de Metro Habilitados por Pulverización de

Hao Song¹, Liang Yi¹, Lixiang Huang¹

¹Hunan Institute of Optoelectronic Integration, College of Materials Science and Engineering, Hunan University, Changsha, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|January 27, 2026

Resumen

Los investigadores desarrollaron dispositivos electroluminiscentes de corriente alterna (ACEL) flexibles a gran escala utilizando pulverización de aerosol. Estos dispositivos ACEL brillantes y estables muestran potencial para aplicaciones como señales de navegación de drones.

Área de la Ciencia:

Ciencia de Materiales
Ingeniería Eléctrica
Optoelectrónica

Sus antecedentes:

Los dispositivos electroluminiscentes de corriente alterna (ACEL) flexibles son cruciales para las tecnologías avanzadas de iluminación y visualización.
Los métodos de fabricación actuales enfrentan desafíos para lograr un alto brillo, estabilidad y grandes áreas luminiscentes.

Objetivo del estudio:

Desarrollar dispositivos ACEL flexibles a escala de metro con brillo y estabilidad mejorados.
Abordar las limitaciones en la fabricación de dispositivos ACEL de alto rendimiento y gran área.

Principales métodos:

Se empleó una técnica simple de pulverización de aerosol utilizando una tinta luminiscente modificada.
Se introdujeron grupos moleculares de cadena larga para mejorar la dispersabilidad de las partículas y la uniformidad de la película.
La modificación con surfactantes de las partículas luminiscentes ZnS:Cu proporcionó impedimento estérico en un disolvente aceitoso.

Principales resultados:

Se mejoró significativamente la dispersabilidad de las partículas y la uniformidad de la película pulverizada.
Los dispositivos ACEL de película delgada plana fabricados exhibieron una excelente flexibilidad y compatibilidad con el sustrato.
Se demostró una estabilidad operativa excepcional en entornos de alta temperatura, humedad y ricos en agua.
Se logró un brillo máximo de casi 500 cd·m^-2 en dispositivos pequeños y 303.3 cd·m^-2 en un dispositivo de 1.2 m × 1.2 m.

Conclusiones:

El método de pulverización de aerosol con tinta luminiscente modificada permite la fabricación de dispositivos ACEL flexibles a escala de metro.
Estos dispositivos ofrecen alto brillo, excelente estabilidad y flexibilidad, adecuados para entornos exigentes.
Las aplicaciones potenciales incluyen iluminación de gran área, pantallas y señales de navegación para sistemas autónomos como drones.

Palabras clave:

ZnS:Cu electroluminiscencia material fluorescente pantalla a gran escala dispositivo emisor de luz

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