Effect of multilayered SrSSrS: CeSrS phosphor prepared by multi-source deposition method on the thin film electroluminescent devices

Y. H. Lee, D. H. Kim, B. K. Ju, T. H. Yeom, T. S Hahn, M. H. Oh, S. H. Choh

Research output: Contribution to journalArticlepeer-review

Abstract

Single-layer SrS: Ce and multilayer SrSSrS: CeSrS thin films have been grown by multi-source deposition method. The X-ray diffraction patterns of the films showed the typical diffraction patterns of the cubic SrS powder. Single-layer SrS: Ce thin films exhibited sulfur deficiency and their fluorescence spectra showed a broad red emission peak. The multilayer SrSSrS: CeSrS electroluminescent device showed nearly stoichiometric composition and an electroluminescent device made of these layers displayed a green-emission intensified spectrum with peaks located at 493 and 523 nm. A distinct S-shaped pinching effect in the transferred charge versus applied voltage characteristics, similar to a hysteretic electroluminescent device, was observed in multilayer device. We interpret that the separation of the light-emitting SrS: Ce layer from the two interfacial SrS layers and the resulting nonuniform space charge in the middle SrS: Ce layer are responsible for the observed enhancement of luminance through the intensified hysteretic effect in the multilayer structure.

Original languageEnglish
Pages (from-to)326-332
Number of pages7
JournalJournal of Crystal Growth
Volume147
Issue number3-4
DOIs
Publication statusPublished - 1995 Feb 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Effect of multilayered SrSSrS: CeSrS phosphor prepared by multi-source deposition method on the thin film electroluminescent devices'. Together they form a unique fingerprint.

Cite this