Mn2+ EPR characterization of thin film electroluminescent devices

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

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 journal › Article › peer-review

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 language	English
Pages (from-to)	S577-S581
Journal	Journal of the Korean Physical Society
Volume	29
Issue number	SUPPL. 3
Publication status	Published - 1996

ASJC Scopus subject areas

General Physics and Astronomy

Cite this

@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 Lee, {Yun Hi} and Oh, {Myung Hwan} and Choh, {Sung Ho}",

year = "1996",

language = "English",

volume = "29",

pages = "S577--S581",

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

Y1 - 1996

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

M3 - Article

AN - SCOPUS:19944396210

SN - 0374-4884

VL - 29

SP - S577-S581

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - SUPPL. 3

ER -

Mn²⁺ EPR characterization of thin film electroluminescent devices

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this