Characteristics of low-voltage behavior for blue ZnS:Ag phosphors coated with SnO 2

Seunggu Rang; Kangduk Kim; Youngjin Kim; Gikang Lee; Youngho Jeong; Jeongin Han; Yongkuy Park

Characteristics of low-voltage behavior for blue ZnS:Ag phosphors coated with SnO ₂

Seunggu Rang, Kangduk Kim, Youngjin Kim, Gikang Lee, Youngho Jeong, Jeongin Han, Yongkuy Park

Department of Chemical and Biochemical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, the effect of a SnO _2-x coating layer on sulfide phosphor powders for CRTs (cathode ray tubes) on the low-voltage luminescence were evaluated. SnO _2-x was coated on blue ZnS phosphors by using the uniform precipitation method with SnCl ₄·4H ₂O through a pH shift in solution by decomposition of ureas. PL (photoluminescence) and CL (cathodoluminescence) were measured for the SnO _2-x-coated ZnS:Ag powders, and those results are discussed as they relate to the X-ray diffraction data and the energy band gaps for the materials. The luminescent characters for the ZnS:Ag phosphors depended on the SnO _2-x coating content and the heat treatment conditions. The CL intensity for the SnO _2-x-coated phosphors were higher than that of as-received sample due to the semiconductivity of the SnO _2-x. For example, the 2.5-wt% SnO _2-x-coated ZnS:Ag phosphors heat treated at 300 °C/2 hr showed a 43% increase in brightness measured at 1.5 kV and 1 mA compared to as-received phosphors.

Original language	English
Pages (from-to)	S189-S192
Journal	Journal of the Korean Physical Society
Volume	35
Issue number	SUPPL. 2
State	Published - 1999

Cite this

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title = "Characteristics of low-voltage behavior for blue ZnS:Ag phosphors coated with SnO 2 ",

abstract = "In this study, the effect of a SnO 2-x coating layer on sulfide phosphor powders for CRTs (cathode ray tubes) on the low-voltage luminescence were evaluated. SnO 2-x was coated on blue ZnS phosphors by using the uniform precipitation method with SnCl 4·4H 2O through a pH shift in solution by decomposition of ureas. PL (photoluminescence) and CL (cathodoluminescence) were measured for the SnO 2-x-coated ZnS:Ag powders, and those results are discussed as they relate to the X-ray diffraction data and the energy band gaps for the materials. The luminescent characters for the ZnS:Ag phosphors depended on the SnO 2-x coating content and the heat treatment conditions. The CL intensity for the SnO 2-x-coated phosphors were higher than that of as-received sample due to the semiconductivity of the SnO 2-x. For example, the 2.5-wt% SnO 2-x-coated ZnS:Ag phosphors heat treated at 300 °C/2 hr showed a 43% increase in brightness measured at 1.5 kV and 1 mA compared to as-received phosphors.",

author = "Seunggu Rang and Kangduk Kim and Youngjin Kim and Gikang Lee and Youngho Jeong and Jeongin Han and Yongkuy Park",

year = "1999",

language = "English",

volume = "35",

pages = "S189--S192",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "SUPPL. 2",

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TY - JOUR

T1 - Characteristics of low-voltage behavior for blue ZnS:Ag phosphors coated with SnO 2

AU - Rang, Seunggu

AU - Kim, Kangduk

AU - Kim, Youngjin

AU - Lee, Gikang

AU - Jeong, Youngho

AU - Han, Jeongin

AU - Park, Yongkuy

PY - 1999

Y1 - 1999

N2 - In this study, the effect of a SnO 2-x coating layer on sulfide phosphor powders for CRTs (cathode ray tubes) on the low-voltage luminescence were evaluated. SnO 2-x was coated on blue ZnS phosphors by using the uniform precipitation method with SnCl 4·4H 2O through a pH shift in solution by decomposition of ureas. PL (photoluminescence) and CL (cathodoluminescence) were measured for the SnO 2-x-coated ZnS:Ag powders, and those results are discussed as they relate to the X-ray diffraction data and the energy band gaps for the materials. The luminescent characters for the ZnS:Ag phosphors depended on the SnO 2-x coating content and the heat treatment conditions. The CL intensity for the SnO 2-x-coated phosphors were higher than that of as-received sample due to the semiconductivity of the SnO 2-x. For example, the 2.5-wt% SnO 2-x-coated ZnS:Ag phosphors heat treated at 300 °C/2 hr showed a 43% increase in brightness measured at 1.5 kV and 1 mA compared to as-received phosphors.

AB - In this study, the effect of a SnO 2-x coating layer on sulfide phosphor powders for CRTs (cathode ray tubes) on the low-voltage luminescence were evaluated. SnO 2-x was coated on blue ZnS phosphors by using the uniform precipitation method with SnCl 4·4H 2O through a pH shift in solution by decomposition of ureas. PL (photoluminescence) and CL (cathodoluminescence) were measured for the SnO 2-x-coated ZnS:Ag powders, and those results are discussed as they relate to the X-ray diffraction data and the energy band gaps for the materials. The luminescent characters for the ZnS:Ag phosphors depended on the SnO 2-x coating content and the heat treatment conditions. The CL intensity for the SnO 2-x-coated phosphors were higher than that of as-received sample due to the semiconductivity of the SnO 2-x. For example, the 2.5-wt% SnO 2-x-coated ZnS:Ag phosphors heat treated at 300 °C/2 hr showed a 43% increase in brightness measured at 1.5 kV and 1 mA compared to as-received phosphors.

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M3 - Article

AN - SCOPUS:0033462962

SN - 0374-4884

VL - 35

SP - S189-S192

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - SUPPL. 2

ER -

Characteristics of low-voltage behavior for blue ZnS:Ag phosphors coated with SnO ₂

Abstract

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