Optical and Electrical Properties of TTF-MPcs (M = Cu, Zn) Interfaces for Optoelectronic Applications
| Autor: | O. Jiménez-Sandoval, María Elena Sánchez-Vergara, Mariel Leyva-Esqueda, José Ramón Álvarez-Bada, Iván D. Rojas-Montoya, Verónica García-Montalvo |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
optical properties
Materials science Absorption spectroscopy Band gap Analytical chemistry Energy-dispersive X-ray spectroscopy Pharmaceutical Science phthalocyanines Article Analytical Chemistry lcsh:QD241-441 chemistry.chemical_compound Vacuum deposition Electricity lcsh:Organic chemistry Heterocyclic Compounds Drug Discovery Physical and Theoretical Chemistry Thin film Ohmic contact organic semiconductor Organic Chemistry Optical Devices thin films electrical properties Indium tin oxide Zinc chemistry Chemistry (miscellaneous) Molecular Medicine Tetrathiafulvalene Copper |
| Zdroj: | Molecules, Vol 20, Iss 12, Pp 21037-21049 (2015) Molecules; Volume 20; Issue 12; Pages: 21037-21049 Molecules Volume 20 Issue 12 Pages 21037-21049 |
| ISSN: | 1420-3049 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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