Mn2+ EPR characterization of thin film electroluminescent devices

Tae Ho Yeom, Soo Hyung Lee, Yun-Hi Lee, Myung Hwan Oh, Sung Ho Choh

Research output: Contribution to journalArticle

Abstract

The manganese luminescenct center in ZnS:Mn powder and thin films have been investigated as a function of Mn concentration using EPR spectrometer. While the concentration of the isolated Mn2+ ions decreases with increasing Mn concentration, the concentration of the Mn clusters increases. It is turned out that the proper Mn concentration for a good ZnS:Mn ELD is about 0.5 mole%. At high Mn concentrations, where the ZnS powder has a dominant hexagonal phase, the Mn ion still prefers to substitute for Zn in ZnS:Mn at the cubic site rather than at the hexagonal site. The isolated Mn2+ ions seem to be changed to monovalent Mn1+ after aging of ZnS:Mn ELD.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume29
Issue numberSUPPL. 3
Publication statusPublished - 1996 Dec 1
Externally publishedYes

Fingerprint

thin films
ions
manganese
spectrometers
substitutes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yeom, T. H., Lee, S. H., Lee, Y-H., Oh, M. H., & Choh, S. H. (1996). Mn2+ EPR characterization of thin film electroluminescent devices. Journal of the Korean Physical Society, 29(SUPPL. 3).

Mn2+ EPR characterization of thin film electroluminescent devices. / Yeom, Tae Ho; Lee, Soo Hyung; Lee, Yun-Hi; Oh, Myung Hwan; Choh, Sung Ho.

In: Journal of the Korean Physical Society, Vol. 29, No. SUPPL. 3, 01.12.1996.

Research output: Contribution to journalArticle

Yeom, Tae Ho ; Lee, Soo Hyung ; Lee, Yun-Hi ; Oh, Myung Hwan ; Choh, Sung Ho. / Mn2+ EPR characterization of thin film electroluminescent devices. In: Journal of the Korean Physical Society. 1996 ; Vol. 29, No. SUPPL. 3.
@article{bec332aef6e4477fb69e9c333db81d64,
title = "Mn2+ EPR characterization of thin film electroluminescent devices",
abstract = "The manganese luminescenct center in ZnS:Mn powder and thin films have been investigated as a function of Mn concentration using EPR spectrometer. While the concentration of the isolated Mn2+ ions decreases with increasing Mn concentration, the concentration of the Mn clusters increases. It is turned out that the proper Mn concentration for a good ZnS:Mn ELD is about 0.5 mole{\%}. At high Mn concentrations, where the ZnS powder has a dominant hexagonal phase, the Mn ion still prefers to substitute for Zn in ZnS:Mn at the cubic site rather than at the hexagonal site. The isolated Mn2+ ions seem to be changed to monovalent Mn1+ after aging of ZnS:Mn ELD.",
author = "Yeom, {Tae Ho} and Lee, {Soo Hyung} and Yun-Hi Lee and Oh, {Myung Hwan} and Choh, {Sung Ho}",
year = "1996",
month = "12",
day = "1",
language = "English",
volume = "29",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
publisher = "Korean Physical Society",
number = "SUPPL. 3",

}

TY - JOUR

T1 - Mn2+ EPR characterization of thin film electroluminescent devices

AU - Yeom, Tae Ho

AU - Lee, Soo Hyung

AU - Lee, Yun-Hi

AU - Oh, Myung Hwan

AU - Choh, Sung Ho

PY - 1996/12/1

Y1 - 1996/12/1

N2 - The manganese luminescenct center in ZnS:Mn powder and thin films have been investigated as a function of Mn concentration using EPR spectrometer. While the concentration of the isolated Mn2+ ions decreases with increasing Mn concentration, the concentration of the Mn clusters increases. It is turned out that the proper Mn concentration for a good ZnS:Mn ELD is about 0.5 mole%. At high Mn concentrations, where the ZnS powder has a dominant hexagonal phase, the Mn ion still prefers to substitute for Zn in ZnS:Mn at the cubic site rather than at the hexagonal site. The isolated Mn2+ ions seem to be changed to monovalent Mn1+ after aging of ZnS:Mn ELD.

AB - The manganese luminescenct center in ZnS:Mn powder and thin films have been investigated as a function of Mn concentration using EPR spectrometer. While the concentration of the isolated Mn2+ ions decreases with increasing Mn concentration, the concentration of the Mn clusters increases. It is turned out that the proper Mn concentration for a good ZnS:Mn ELD is about 0.5 mole%. At high Mn concentrations, where the ZnS powder has a dominant hexagonal phase, the Mn ion still prefers to substitute for Zn in ZnS:Mn at the cubic site rather than at the hexagonal site. The isolated Mn2+ ions seem to be changed to monovalent Mn1+ after aging of ZnS:Mn ELD.

UR - http://www.scopus.com/inward/record.url?scp=19944396210&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=19944396210&partnerID=8YFLogxK

M3 - Article

VL - 29

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - SUPPL. 3

ER -