Decrease of the number of the isolated emission center Mn2+ in an aged ZnS:Mn electroluminescent device

Y. H. Lee; D. H. Kim; B. K. Ju; M. H. Song; T. S. Hahn; S. H. Choh; M. H. Oh

doi:10.1063/1.359887

Decrease of the number of the isolated emission center Mn²⁺ in an aged ZnS:Mn electroluminescent device

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

Department of Physics

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16 Citations (Scopus)

Abstract

We observed a decrease of the number of effective emission centers Mn ²⁺ in the aged ZnS:Mn electroluminescence (EL) devices compared to the fresh EL devices using the electron-paramagnetic-resonance technique. Such phenomena can take place during the operation of the EL device, since the isolated Mn can easily diffuse into another site and forming cluster. Another possible explanation is that Mn²⁺ changes into Mn¹⁺ or Mn³⁺ by transferring the electronic charge of the isolated Mn ²⁺ to the neighboring Mn ions via sulfur and/or sulfur vacancy. As a result, luminance is lowered due to the decrease in the number of efficient emission centers of isolated Mn²⁺.

Original language	English
Pages (from-to)	4253-4257
Number of pages	5
Journal	Journal of Applied Physics
Volume	78
Issue number	6
DOIs	https://doi.org/10.1063/1.359887
Publication status	Published - 1995

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Decrease of the number of the isolated emission center Mn2+ in an aged ZnS:Mn electroluminescent device",

abstract = "We observed a decrease of the number of effective emission centers Mn 2+ in the aged ZnS:Mn electroluminescence (EL) devices compared to the fresh EL devices using the electron-paramagnetic-resonance technique. Such phenomena can take place during the operation of the EL device, since the isolated Mn can easily diffuse into another site and forming cluster. Another possible explanation is that Mn2+ changes into Mn1+ or Mn3+ by transferring the electronic charge of the isolated Mn 2+ to the neighboring Mn ions via sulfur and/or sulfur vacancy. As a result, luminance is lowered due to the decrease in the number of efficient emission centers of isolated Mn2+.",

author = "Lee, {Y. H.} and Kim, {D. H.} and Ju, {B. K.} and Song, {M. H.} and Hahn, {T. S.} and Choh, {S. H.} and Oh, {M. H.}",

year = "1995",

doi = "10.1063/1.359887",

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pages = "4253--4257",

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TY - JOUR

T1 - Decrease of the number of the isolated emission center Mn2+ in an aged ZnS:Mn electroluminescent device

AU - Lee, Y. H.

AU - Kim, D. H.

AU - Ju, B. K.

AU - Song, M. H.

AU - Hahn, T. S.

AU - Choh, S. H.

AU - Oh, M. H.

PY - 1995

Y1 - 1995

N2 - We observed a decrease of the number of effective emission centers Mn 2+ in the aged ZnS:Mn electroluminescence (EL) devices compared to the fresh EL devices using the electron-paramagnetic-resonance technique. Such phenomena can take place during the operation of the EL device, since the isolated Mn can easily diffuse into another site and forming cluster. Another possible explanation is that Mn2+ changes into Mn1+ or Mn3+ by transferring the electronic charge of the isolated Mn 2+ to the neighboring Mn ions via sulfur and/or sulfur vacancy. As a result, luminance is lowered due to the decrease in the number of efficient emission centers of isolated Mn2+.

AB - We observed a decrease of the number of effective emission centers Mn 2+ in the aged ZnS:Mn electroluminescence (EL) devices compared to the fresh EL devices using the electron-paramagnetic-resonance technique. Such phenomena can take place during the operation of the EL device, since the isolated Mn can easily diffuse into another site and forming cluster. Another possible explanation is that Mn2+ changes into Mn1+ or Mn3+ by transferring the electronic charge of the isolated Mn 2+ to the neighboring Mn ions via sulfur and/or sulfur vacancy. As a result, luminance is lowered due to the decrease in the number of efficient emission centers of isolated Mn2+.

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Decrease of the number of the isolated emission center Mn²⁺ in an aged ZnS:Mn electroluminescent device

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