Effects of annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors

Z. T. Kang; H. Menkara; B. K. Wagner; C. J. Summers; R. Durst; Y. Diawara; G. Mednikova; T. Thorson

doi:10.1016/j.jlumin.2005.05.002

Effects of annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors

Z. T. Kang, H. Menkara, B. K. Wagner, C. J. Summers, R. Durst, Y. Diawara, G. Mednikova, T. Thorson

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

15 Scopus citations

Abstract

The effect of the annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors for X-ray imaging applications was studied. The phosphors were doped by ball-milling bulk ZnTe crystals in an O₂ atmosphere and annealed in various atmospheres: vacuum, N₂ or forming gas (95%N ₂/5%H₂). All samples exhibited a deep red emission centered at 680 nm.The samples annealed in forming gas atmosphere exhibited an X-ray luminescent efficiency five times higher than the samples annealed in vacuum or N₂ atmospheres, which was attributed to the removal of surface tellurium oxides.

Original language	English
Pages (from-to)	156-162
Number of pages	7
Journal	Journal of Luminescence
Volume	117
Issue number	2
DOIs	https://doi.org/10.1016/j.jlumin.2005.05.002
State	Published - Apr 2006
Externally published	Yes

Keywords

Luminescence
Phosphors
Scintillators
ZnTe

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10.1016/j.jlumin.2005.05.002

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title = "Effects of annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors",

abstract = "The effect of the annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors for X-ray imaging applications was studied. The phosphors were doped by ball-milling bulk ZnTe crystals in an O2 atmosphere and annealed in various atmospheres: vacuum, N2 or forming gas (95\%N 2/5\%H2). All samples exhibited a deep red emission centered at 680 nm.The samples annealed in forming gas atmosphere exhibited an X-ray luminescent efficiency five times higher than the samples annealed in vacuum or N2 atmospheres, which was attributed to the removal of surface tellurium oxides.",

keywords = "Luminescence, Phosphors, Scintillators, ZnTe",

author = "Kang, \{Z. T.\} and H. Menkara and Wagner, \{B. K.\} and Summers, \{C. J.\} and R. Durst and Y. Diawara and G. Mednikova and T. Thorson",

year = "2006",

month = apr,

doi = "10.1016/j.jlumin.2005.05.002",

language = "English",

volume = "117",

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journal = "Journal of Luminescence",

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T1 - Effects of annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors

AU - Kang, Z. T.

AU - Menkara, H.

AU - Wagner, B. K.

AU - Summers, C. J.

AU - Durst, R.

AU - Diawara, Y.

AU - Mednikova, G.

AU - Thorson, T.

PY - 2006/4

Y1 - 2006/4

N2 - The effect of the annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors for X-ray imaging applications was studied. The phosphors were doped by ball-milling bulk ZnTe crystals in an O2 atmosphere and annealed in various atmospheres: vacuum, N2 or forming gas (95%N 2/5%H2). All samples exhibited a deep red emission centered at 680 nm.The samples annealed in forming gas atmosphere exhibited an X-ray luminescent efficiency five times higher than the samples annealed in vacuum or N2 atmospheres, which was attributed to the removal of surface tellurium oxides.

AB - The effect of the annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors for X-ray imaging applications was studied. The phosphors were doped by ball-milling bulk ZnTe crystals in an O2 atmosphere and annealed in various atmospheres: vacuum, N2 or forming gas (95%N 2/5%H2). All samples exhibited a deep red emission centered at 680 nm.The samples annealed in forming gas atmosphere exhibited an X-ray luminescent efficiency five times higher than the samples annealed in vacuum or N2 atmospheres, which was attributed to the removal of surface tellurium oxides.

KW - Luminescence

KW - Phosphors

KW - Scintillators

KW - ZnTe

UR - https://www.scopus.com/pages/publications/27844498698

U2 - 10.1016/j.jlumin.2005.05.002

DO - 10.1016/j.jlumin.2005.05.002

M3 - Article

AN - SCOPUS:27844498698

SN - 0022-2313

VL - 117

SP - 156

EP - 162

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 2

ER -

Effects of annealing atmosphere on the luminescent efficiency of ZnTe:O phosphors

Abstract

Keywords

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