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Updated: Feb 11, 2026
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Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
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Regulación de la cristalización para las células solares de perovskita procesadas por aire, eficientes y estables a
Zhengzheng Yao1,2, Xueying Li1,2, Lei Ning1,2
1State Key Laboratory of Bio-based Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Langmuir : the ACS journal of surfaces and colloids
|February 10, 2026
Resumen
Este estudio introduce una nueva estrategia de polimerización utilizando líquidos iónicos para proteger las células solares de perovskita de la humedad, mejorando significativamente su estabilidad y eficiencia en condiciones adversas.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Energía renovable Energía renovable.
- Ingeniería Química Ingeniería Química.
Sus antecedentes:
- La sensibilidad a la humedad dificulta la cristalización de la perovskita y la perfección estructural.
- Los aditivos son cruciales para controlar las fases intermedias y mitigar la interferencia de la humedad.
Objetivo del estudio:
- Desarrollar una estrategia asistida por polimerización in situ para las células solares de perovskita resistentes a la humedad.
- Investigar el papel de los líquidos iónicos polimerizables en la formación y estabilidad de la perovskita.
Principales métodos:
- Incorporación de bromuro de 1-vinilo-3-etilimidazolio (VEImBr) para la polimerización in situ.
- Análisis termodinámico de la evolución de la fase intermedia durante el recocido térmico.
- Caracterización de las películas de perovskita y el rendimiento de las células solares.
Principales resultados:
- VEImBr protege eficazmente la cristalización de la perovskita de la humedad.
- Las transiciones de fase intermedias favorecen la nucleación de perovskita y la cinética de crecimiento.
- El VEImBr polimerizado se adhiere a los límites de grano, reduciendo la densidad de defecto.
- Logró una eficiencia campeona del 22,57% para las células fabricadas al aire libre.
- Los dispositivos encapsulados mantuvieron una eficiencia del 80% después de 900 horas de pruebas de humedad-calor.
Conclusiones:
- La estrategia propuesta mejora el rendimiento de las células solares de perovskita y la estabilidad a largo plazo.
- La polimerización in situ de líquidos iónicos es un enfoque prometedor para las perovskitas estables a la humedad.
- Este método ofrece una vía para el desarrollo de tecnologías solares de perovskita duradera.
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