Semiconductor orgánico basado en hidroxiquinolina de zinc dopada con tetracianoquinodimetano

Francisco Iñaki Díaz Morales; María Elena Sánchez Vergara

doi:10.29057/icbi.v14iEspecial.15338

Autores/as

Francisco Iñaki Díaz Morales Universidad Anáhuac https://orcid.org/0009-0005-0420-0346
María Elena Sánchez Vergara Universidad Anáhuac https://orcid.org/0000-0002-7163-6175

DOI:

https://doi.org/10.29057/icbi.v14iEspecial.15338

Palabras clave:

Hidroxiquinolina, Tetracianoquinodimetano, Semiconductor Orgánico, Película Delgada

Resumen

En este trabajo fue realizada la síntesis, con una relación de masa 2:1 y por la técnica de reflujo, del semiconductor compuesto por 8-hidroxiquinolina de zinc (ZnQ₂) con el aceptor electrónico tetracianoquinodimetano (TCNQ). Este semiconductor orgánico ZnQ₂-TCNQ fue caracterizado estructuralmente por medio de espectroscopía infrarroja y, posteriormente, fue sublimado por la técnica de evaporación al alto vacío para obtener películas delgadas. Sus parámetros ópticos se evaluaron por espectroscopía ultravioleta-visible y el espectro de absorbancia presenta una intensa banda en 341 nm. Además, la brecha óptica obtenida es de 2.07 eV para transiciones electrónicas indirectas y de 2.4 eV para directas. Los espectros mostraron máximos de 41.05 % y 41.39 % para la transmitancia y la reflectancia, respectivamente. Estos parámetros ópticos, sumados al comportamiento óhmico de las películas, medido por la técnica de cuatro puntas colineales en dispositivos fabricados también por evaporación al alto vacío, dan indicio de su capacidad de ser empleadas como capas activas en optoelectrónica.

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Citas

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