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Dibenzothiopheno[6,5-b:6',5'-f]thieno[3,2-b]thiophene (DBTTT): semiconductor orgánico de pequeñas moléculas de alto
Jeong-Il Park1, Jong Won Chung1, Joo-Young Kim1
1Material Research Center, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd. , Samsung-ro 130, Yongtong-gu, Suwon-si, Gyeonggi-do 443-803, Korea.
Journal of the American Chemical Society
|April 1, 2015
Resumen
Un nuevo semiconductor orgánico, el dibenzothiopheno[6,5-b:6], fue desarrollado.
Área de la Ciencia:
- La electrónica orgánica es la electrónica orgánica.
- Ciencia de los materiales ciencia de los materiales.
- Física de los semiconductores física de los semiconductores.
Sus antecedentes:
- Los semiconductores orgánicos son cruciales para la electrónica flexible.
- Los materiales a base de tiofeno ofrecen propiedades electrónicas sintonizables.
- La mejora de las interacciones intermoleculares es clave para mejorar el transporte de carga.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo heteroaceno rico en tiofeno, el dibenzotiofeno[6,5-b:6',5'-f]tieno[3,2-b]tiofeno (DBTTT).
- Investigar el impacto de las interacciones S-S en el empaque molecular y la transferencia de carga.
- Para evaluar el rendimiento de DBTTT en transistores de efecto de campo.
Principales métodos:
- Síntesis del DBTTT.
- Cristalografía de rayos X para el análisis estructural.
- Fabricación y caracterización de transistores policristalinos de película delgada.
Principales resultados:
- DBTTT exhibe una transferencia de carga intermolecular mejorada debido a las fuertes interacciones S-S.
- La estructura cristalina muestra distancias π-π acortadas y una mayor densidad de embalaje en comparación con DNTT.
- Se logró una mayor movilidad de agujero de 19,3 cm2·V1·s1 en los transistores de película delgada DBTTT, seis veces mayor que DNTT.
- Ha demostrado movilidades angulares isotrópicas y estabilidad térmica hasta 140 °C.
Conclusiones:
- DBTTT es un semiconductor orgánico prometedor con propiedades superiores de transporte de carga.
- El diseño molecular mejora efectivamente las interacciones intermoleculares para mejorar el rendimiento.
- DBTTT muestra potencial para la uniformidad y procesamiento de dispositivos en la electrónica orgánica.
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