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

Yun-Hi Lee, D. H. Kim, Byeong Kwon Ju, T. H. Yeom, T. S Hahn, M. H. Oh, S. H. Choh

Research output: Contribution to journalArticle

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
Publication statusPublished - 1995 Feb 1
Externally publishedYes

Fingerprint

Luminescent devices
Phosphors
phosphors
Multilayers
Thin films
thin films
Diffraction patterns
diffraction patterns
Electric space charge
Sulfur
Powders
Luminance
Fluorescence
luminance
X ray diffraction
laminates
space charge
emission spectra
Electric potential
sulfur

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Chemistry
  • Inorganic Chemistry

Cite this

Effect of multilayered SrSSrS : CeSrS phosphor prepared by multi-source deposition method on the thin film electroluminescent devices. / Lee, Yun-Hi; Kim, D. H.; Ju, Byeong Kwon; Yeom, T. H.; S Hahn, T.; Oh, M. H.; Choh, S. H.

In: Journal of Crystal Growth, Vol. 147, No. 3-4, 01.02.1995, p. 326-332.

Research output: Contribution to journalArticle

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AU - Kim, D. H.

AU - Ju, Byeong Kwon

AU - Yeom, T. H.

AU - S Hahn, T.

AU - Oh, M. H.

AU - Choh, S. H.

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N2 - 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.

AB - 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.

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