Photoluminescence and optical absorption of Cs2NaScF 6: Cr3+

L. P. Sosman; R. J.M. Da Fonseca; A. Dias Tavares; M. K.K. Nakaema; H. N. Bordallo

doi:10.1007/s10895-005-0045-9

Photoluminescence and optical absorption of Cs₂NaScF ₆: Cr3+

L. P. Sosman, R. J.M. Da Fonseca, A. Dias Tavares^*, M. K.K. Nakaema, H. N. Bordallo

^*Corresponding author for this work

8 Citations (Scopus)

Abstract

The main objective of this paper is the characterization of the spectroscopic properties of new materials that are prospective laser media. This approach allows for the comparison of the properties of the Cr³⁺ in different environments. Here, we have studied the photoluminescence and optical absorption of Cs₂NaScF₆:Cr³⁺ single crystals. On the basis of near-infrared luminescence measurements at 2, 77, and 300 K the observed lines originated from the Cr³⁺-centres were associated with the ⁴T₂ (⁴4 F)→ 4A₂ ( ⁴F) transition and the lifetimes were obtained. In spite of the quenching observed as a function of temperature at least 10% of the 2 K emission intensity for Cs₂NaScF₆ doped with 1% of Cr³⁺ remains at room temperature. Besides, the 2 K emission broad band could be well described in terms of normal modes of the octahedral complex [CrF ₆]^3-, and the Racah and crystal-field parameters calculated.

Original language	English
Journal	Journal of Fluorescence
Volume	16
Issue number	3
Pages (from-to)	317-323
Number of pages	7
ISSN	1053-0509
DOIs	https://doi.org/10.1007/s10895-005-0045-9
Publication status	Published - 1 May 2006
Externally published	Yes

Keywords

Chromium
Crystal and ligand fields
Insulators
Time-resolved optical spectroscopy

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10.1007/s10895-005-0045-9

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title = "Photoluminescence and optical absorption of Cs2NaScF 6: Cr3+",

abstract = "The main objective of this paper is the characterization of the spectroscopic properties of new materials that are prospective laser media. This approach allows for the comparison of the properties of the Cr3+ in different environments. Here, we have studied the photoluminescence and optical absorption of Cs2NaScF6:Cr3+ single crystals. On the basis of near-infrared luminescence measurements at 2, 77, and 300 K the observed lines originated from the Cr3+-centres were associated with the 4T2 (44 F)→ 4A2 ( 4F) transition and the lifetimes were obtained. In spite of the quenching observed as a function of temperature at least 10% of the 2 K emission intensity for Cs2NaScF6 doped with 1% of Cr3+ remains at room temperature. Besides, the 2 K emission broad band could be well described in terms of normal modes of the octahedral complex [CrF 6]3-, and the Racah and crystal-field parameters calculated.",

keywords = "Chromium, Crystal and ligand fields, Insulators, Time-resolved optical spectroscopy",

author = "Sosman, {L. P.} and {Da Fonseca}, {R. J.M.} and Tavares, {A. Dias} and Nakaema, {M. K.K.} and Bordallo, {H. N.}",

year = "2006",

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doi = "10.1007/s10895-005-0045-9",

language = "English",

volume = "16",

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journal = "Journal of Fluorescence",

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TY - JOUR

T1 - Photoluminescence and optical absorption of Cs2NaScF 6

T2 - Cr3+

AU - Sosman, L. P.

AU - Da Fonseca, R. J.M.

AU - Tavares, A. Dias

AU - Nakaema, M. K.K.

AU - Bordallo, H. N.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - The main objective of this paper is the characterization of the spectroscopic properties of new materials that are prospective laser media. This approach allows for the comparison of the properties of the Cr3+ in different environments. Here, we have studied the photoluminescence and optical absorption of Cs2NaScF6:Cr3+ single crystals. On the basis of near-infrared luminescence measurements at 2, 77, and 300 K the observed lines originated from the Cr3+-centres were associated with the 4T2 (44 F)→ 4A2 ( 4F) transition and the lifetimes were obtained. In spite of the quenching observed as a function of temperature at least 10% of the 2 K emission intensity for Cs2NaScF6 doped with 1% of Cr3+ remains at room temperature. Besides, the 2 K emission broad band could be well described in terms of normal modes of the octahedral complex [CrF 6]3-, and the Racah and crystal-field parameters calculated.

AB - The main objective of this paper is the characterization of the spectroscopic properties of new materials that are prospective laser media. This approach allows for the comparison of the properties of the Cr3+ in different environments. Here, we have studied the photoluminescence and optical absorption of Cs2NaScF6:Cr3+ single crystals. On the basis of near-infrared luminescence measurements at 2, 77, and 300 K the observed lines originated from the Cr3+-centres were associated with the 4T2 (44 F)→ 4A2 ( 4F) transition and the lifetimes were obtained. In spite of the quenching observed as a function of temperature at least 10% of the 2 K emission intensity for Cs2NaScF6 doped with 1% of Cr3+ remains at room temperature. Besides, the 2 K emission broad band could be well described in terms of normal modes of the octahedral complex [CrF 6]3-, and the Racah and crystal-field parameters calculated.

KW - Chromium

KW - Crystal and ligand fields

KW - Insulators

KW - Time-resolved optical spectroscopy

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DO - 10.1007/s10895-005-0045-9

M3 - Journal article

AN - SCOPUS:33745501822

SN - 1053-0509

VL - 16

SP - 317

EP - 323

JO - Journal of Fluorescence

JF - Journal of Fluorescence

IS - 3

ER -

Photoluminescence and optical absorption of Cs₂NaScF ₆: Cr3+

Abstract

Keywords

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