Current injection from a metal to a disordered hopping system. III. Comparison between experiment and Monte Carlo simulation

Autor:	Heinz Bässler, Horst Vestweber, U. Wolf, Paul Seidler, S. Barth, Heike Riel, P Müller, W. Rieß
Rok vydání:	1999
Předmět:	Materials science chemistry Condensed matter physics Aluminium Magnesium Monte Carlo method chemistry.chemical_element Thermionic emission Dielectric Current (fluid) Quantum tunnelling Diode
Zdroj:	Physical Review B. 60:8791-8797
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.60.8791
Popis:	We have performed electric-field and temperature-dependent electron injection studies in an aluminum/tris(8-hydroxy-quinolinolato)aluminum/magnesium:silver single-layer organic light-emitting diode. Analysis of the observed injection currents in terms of the classic Fowler-Nordheim (FN) tunneling or Richardson-Schottky (RS) thermionic emission proved to be inadequate. Whereas, the FN-type behavior at high-electric fields must be considered accidental, the injection currents qualitatively resemble those of the RS concept. However, quantitative differences are observed concerning the RS coefficient, the prefactor current, and the temperature dependence. On the other hand, the experimental data are in excellent agreement with a recently presented Monte Carlo simulation [U. Wolf et al., Phys. Rev. B 59, 7507 (1999)] of carrier injection from a metal to an organic dielectric with random hopping sites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a5e9b919af3bf0b221edb9716e1e7d9 https://doi.org/10.1103/physrevb.60.8791 Zobrazit plný text záznamu