INVESTIGATION OF ALQ3 MOLECULES DISSOLVED IN CHCL3 AND EMPLOYED AS THIN-FILMS

Authors

Zachary James Welchel, Department of Physics, University of West Georgia, Carrollton, GAFollow
L. Ajith DeSilva, Department of Physics, University of West Georgia, Carrollton, GAFollow

Abstract

We investigate the optical and electrical properties of Tris-(8-hydroxyquinoline)aluminum (Alq3), which has been used as the sole electron-transport material in various optoelectronic applications. The compound is highly emissive both in solution and thin-film configurations. Alq3 dissolved in CHCL3 reveals two absorption bands at ~259 and 388nm. When the solution endures reduction to millimolar concentrations, two vibronic progressions are resolved at ~334 and ~319nm. The thin-films were fabricated by depositing Alq3 onto borosilicate glass using the spin-coating method to achieve varying degrees of thickness. In thin-film samples, it is found that a prominent narrow absorption peak emerges at ~259 nm with a broad band at ~360 nm. The film fabrication method and optoelectronic properties are presented in detail.

Recommended Citation

Welchel, Zachary James and DeSilva, L. Ajith (2020) "INVESTIGATION OF ALQ3 MOLECULES DISSOLVED IN CHCL3 AND EMPLOYED AS THIN-FILMS," Georgia Journal of Science, Vol. 78, No. 1, Article 110.
Available at: https://digitalcommons.gaacademy.org/gjs/vol78/iss1/110