title: Optical and Electrical Properties of TTF-MPcs (M = Cu, Zn) Interfaces for Optoelectronic Applications.
abstract: Sandwich structures were fabricated by a vacuum deposition method using MPc (M = Cu, Zn), with a Tetrathiafulvalene (TTF) derivative, and Indium Tin Oxide (ITO) and aluminum electrodes. The structure and morphology of the deposited films were studied by IR spectroscopy, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The absorption spectra of TTF derivative-MPc (M = Cu, Zn) thin films deposited at room temperature were recorded in the spectral range 200-1000 nm. The optical band gap of the thin films was determined from the (αhν)(1/2) vs. hν plot. The direct-current (DC) electrical properties of the glass/ITO/TTFderiv-MPc (M = Cu, Zn)/Al structures were also investigated. Changes in conductivity of the derivative-TTF-enriched Pc compounds suggest the formation of alternative paths for carrier conduction. At low voltages, forward current density obeys an ohmic I-V relationship; at higher voltages, conduction is mostly due to a space-charge-limited conduction (SCLC) mechanism.
authors.affiliation: Facultad de Ingeniería, Universidad Anáhuac México Norte, Avenida Universidad Anáhuac 46, Col. Lomas Anáhuac, Huixquilucan 52786, Estado de México, Mexico. elena.sanchez@anahuac.mx.
authors.forename: María Elena
authors.initials: ME
authors.lastname: Sánchez-Vergara
authors.affiliation: Facultad de Ingeniería, Universidad Anáhuac México Norte, Avenida Universidad Anáhuac 46, Col. Lomas Anáhuac, Huixquilucan 52786, Estado de México, Mexico. mariel.leyva1901@gmail.com.
authors.forename: Mariel
authors.initials: M
authors.lastname: Leyva-Esqueda
authors.affiliation: Facultad de Ingeniería, Universidad Anáhuac México Norte, Avenida Universidad Anáhuac 46, Col. Lomas Anáhuac, Huixquilucan 52786, Estado de México, Mexico. ramon.alvarez@anahuac.mx.
authors.forename: José Ramón
authors.initials: JR
authors.lastname: Alvárez-Bada
authors.affiliation: Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México 04510, D.F., Mexico. vgm@unam.mx.
authors.forename: Verónica
authors.initials: V
authors.lastname: García-Montalvo
authors.affiliation: Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México 04510, D.F., Mexico. ivandachem@hotmail.com.
authors.forename: Iván Darío
authors.initials: ID
authors.lastname: Rojas-Montoya
authors.affiliation: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Querétaro, Apartado Postal 1-798, Querétaro, Qro. 76001, Mexico. ojimenez@cinvestav.mx.
authors.forename: Omar
authors.initials: O
authors.lastname: Jiménez-Sandoval
mesh_terms: D003300:Copper / Q000737:chemistry*; D004560:Electricity; D006571:Heterocyclic Compounds / Q000737:chemistry*; D055096:Optical Devices; D015032:Zinc / Q000737:chemistry*
chemical_list: D006571:Heterocyclic Compounds; D003300:Copper; C063887:tetrathiafulvalene; D015032:Zinc
keywords: electrical properties; optical properties; organic semiconductor; phthalocyanines; thin films