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Efecto pirofotrónico dependiente de la luz circularmente polarizado de perovskitas dobles quiral-polares en 2D
Zhou Li1,2, Chengmin Ji1,3, Yipeng Fan1,2
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Journal of the American Chemical Society
|November 13, 2023
Resumen
Los investigadores desarrollaron nuevas perovskitas quirales-polares para mejorar la detección de luz polarizada circularmente (CPL). La combinación de propiedades quirópticas con el efecto pirofotrónico aumenta significativamente el rendimiento del detector, permitiendo la detección sensible de CPL.
Área de la Ciencia:
- Ciencias de los materiales
- Optoelectrónica y sus derivados
- Física del estado sólido
Sus antecedentes:
- Las perovskitas híbridas quirales ofrecen propiedades únicas para la detección de luz polarizada circular (CPL).
- El efecto pirofotrónico mejora el rendimiento del fotodetector, pero es un desafío para la detección de CPL.
Objetivo del estudio:
- Para combinar los fenómenos quirópticos y el efecto pirofotrónico para la detección avanzada de CPL.
- Diseñar y sintetizar nuevas perovskitas dobles quirales y polares sin plomo.
Principales métodos:
- Perovskitas dobles quirales y polares sin plomo de dos dimensiones sintetizadas: S/R-[(4-aminofenilo) etilamina]2AgBiI8·0.5H2O.
- Investigó el efecto pirofotrónico en estos nuevos materiales de perovskita.
Principales resultados:
- Se logró una detección de CPL basado en piroeléctricos sin precedentes.
- Demostró un aumento de 40 veces en la corriente pirofotrónica en comparación con la corriente fotovoltaica.
- Alcanzó una alta cifra de detección de CPL de mérito (glph) de hasta 0,27 con sesgo cero.
Conclusiones:
- El efecto pirofotrónico en las perovskitas quirales-polares permite la detección de CPL de alta sensibilidad.
- Este trabajo abre nuevas posibilidades para los materiales quirales en aplicaciones optoelectrónicas.
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