Defect structure and spectroscopic characteristics of codoped Hf: Er: LiNbO3 crystals

Liang Sun; Chun Hui Yang; Yu Heng Xu; Lian Cheng Zhao

doi:10.1002/crat.200800332

Defect structure and spectroscopic characteristics of codoped Hf: Er: LiNbO₃ crystals

Liang Sun
, Chun Hui Yang^*
, Yu Heng Xu
, Lian Cheng Zhao

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Harbin Institute of Technology

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

7 Scopus citations

Abstract

Codoped Hf: Er: LiNbO₃ crystals have been grown by the Czochralski technique. Defect structures of the crystals were analyzed by IR absorption spectra, and the compositions of the crystals were measured by X-ray fluorescent spectrograph. A new OH^--associated vibrational peak at 3492 cm^-1 was revealed in 6 mol % Hf: 1 mol % Er: LiNbO₃ crystal. It was attributed to (Hf_Nb)^--OH ^--(Er_Nb)^2- defect centers. The Er³⁺ concentrations in crystals gradually decreased with the increase of the codoped Hf⁴⁺ concentrations in the melts. The emission characteristics of the crystals were investigated by the fluorescence spectrum. It was found that the luminescent intensity in codoped 6 mol % Hf: 1 mol % Er: LiNbO₃ crystal was 3.5 times stronger than, that in single doped 1 mol % Er: LiNbO ₃ crystal. The luminescent enhancement effect was successfully explained on the basis of detect structure of the crystals.

Original language	English
Pages (from-to)	433-439
Number of pages	7
Journal	Crystal Research and Technology
Volume	44
Issue number	4
DOIs	https://doi.org/10.1002/crat.200800332
State	Published - Apr 2009
Externally published	Yes

Keywords

Codoped Hf:Er:LiNbO
Crystals
Defect structure
Spectra characteristics

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10.1002/crat.200800332

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@article{032640a9213e45648c9e56d31eff74d3,

title = "Defect structure and spectroscopic characteristics of codoped Hf: Er: LiNbO3 crystals",

abstract = "Codoped Hf: Er: LiNbO3 crystals have been grown by the Czochralski technique. Defect structures of the crystals were analyzed by IR absorption spectra, and the compositions of the crystals were measured by X-ray fluorescent spectrograph. A new OH--associated vibrational peak at 3492 cm-1 was revealed in 6 mol \% Hf: 1 mol \% Er: LiNbO3 crystal. It was attributed to (HfNb)--OH --(ErNb)2- defect centers. The Er3+ concentrations in crystals gradually decreased with the increase of the codoped Hf4+ concentrations in the melts. The emission characteristics of the crystals were investigated by the fluorescence spectrum. It was found that the luminescent intensity in codoped 6 mol \% Hf: 1 mol \% Er: LiNbO3 crystal was 3.5 times stronger than, that in single doped 1 mol \% Er: LiNbO 3 crystal. The luminescent enhancement effect was successfully explained on the basis of detect structure of the crystals.",

keywords = "Codoped Hf:Er:LiNbO, Crystals, Defect structure, Spectra characteristics",

author = "Liang Sun and Yang, \{Chun Hui\} and Xu, \{Yu Heng\} and Zhao, \{Lian Cheng\}",

year = "2009",

month = apr,

doi = "10.1002/crat.200800332",

language = "英语",

volume = "44",

pages = "433--439",

journal = "Crystal Research and Technology",

issn = "0232-1300",

publisher = "John Wiley \& Sons Inc.",

number = "4",

}

TY - JOUR

T1 - Defect structure and spectroscopic characteristics of codoped Hf

T2 - Er: LiNbO3 crystals

AU - Sun, Liang

AU - Yang, Chun Hui

AU - Xu, Yu Heng

AU - Zhao, Lian Cheng

PY - 2009/4

Y1 - 2009/4

N2 - Codoped Hf: Er: LiNbO3 crystals have been grown by the Czochralski technique. Defect structures of the crystals were analyzed by IR absorption spectra, and the compositions of the crystals were measured by X-ray fluorescent spectrograph. A new OH--associated vibrational peak at 3492 cm-1 was revealed in 6 mol % Hf: 1 mol % Er: LiNbO3 crystal. It was attributed to (HfNb)--OH --(ErNb)2- defect centers. The Er3+ concentrations in crystals gradually decreased with the increase of the codoped Hf4+ concentrations in the melts. The emission characteristics of the crystals were investigated by the fluorescence spectrum. It was found that the luminescent intensity in codoped 6 mol % Hf: 1 mol % Er: LiNbO3 crystal was 3.5 times stronger than, that in single doped 1 mol % Er: LiNbO 3 crystal. The luminescent enhancement effect was successfully explained on the basis of detect structure of the crystals.

AB - Codoped Hf: Er: LiNbO3 crystals have been grown by the Czochralski technique. Defect structures of the crystals were analyzed by IR absorption spectra, and the compositions of the crystals were measured by X-ray fluorescent spectrograph. A new OH--associated vibrational peak at 3492 cm-1 was revealed in 6 mol % Hf: 1 mol % Er: LiNbO3 crystal. It was attributed to (HfNb)--OH --(ErNb)2- defect centers. The Er3+ concentrations in crystals gradually decreased with the increase of the codoped Hf4+ concentrations in the melts. The emission characteristics of the crystals were investigated by the fluorescence spectrum. It was found that the luminescent intensity in codoped 6 mol % Hf: 1 mol % Er: LiNbO3 crystal was 3.5 times stronger than, that in single doped 1 mol % Er: LiNbO 3 crystal. The luminescent enhancement effect was successfully explained on the basis of detect structure of the crystals.

KW - Codoped Hf:Er:LiNbO

KW - Crystals

KW - Defect structure

KW - Spectra characteristics

UR - https://www.scopus.com/pages/publications/65349103542

U2 - 10.1002/crat.200800332

DO - 10.1002/crat.200800332

M3 - 文章

AN - SCOPUS:65349103542

SN - 0232-1300

VL - 44

SP - 433

EP - 439

JO - Crystal Research and Technology

JF - Crystal Research and Technology

IS - 4

ER -

Defect structure and spectroscopic characteristics of codoped Hf: Er: LiNbO₃ crystals

Abstract

Keywords

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