An investigation of Mn4+ doped BeAl2O4 single crystal for WLEDs application

Jianxu Hu; Yun Zhao; Baojiu Chen; Haiping Xia; Yuanpeng Zhang; Huanqing Ye

doi:10.1016/j.ceramint.2018.08.006

An investigation of Mn⁴⁺ doped BeAl₂O₄ single crystal for WLEDs application

Jianxu Hu, Yun Zhao, Baojiu Chen, Haiping Xia, Yuanpeng Zhang, Huanqing Ye

Powder Diffraction

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

14 Scopus citations

Abstract

A novel red-emitting Mn⁴⁺ doped BeAl₂O₄ single crystal is synthesized by a Czochralski technique. Narrow red emission is observed from the Mn⁴⁺ ions occupying Al³⁺ sites in distorted octahedrons. Crystal field parameter Dq, Racah parameters B and C are determined to be 2392, 1423 and 3332 cm⁻¹, respectively. The value of Dq/B indicates that Mn⁴⁺ ions are in a weak crystal field. The quenching temperature and activation energy are calculated from the temperature-dependent measurement for emission intensity and decay time. A detailed discussion of thermal quenching mechanism reveals that the crossover via the ⁴T₂ level is the main quenching route in the prepared material.

Original language	English
Pages (from-to)	20220-20226
Number of pages	7
Journal	Ceramics International
Volume	44
Issue number	16
DOIs	https://doi.org/10.1016/j.ceramint.2018.08.006
State	Published - Nov 2018

Funding

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51772159 , 51472125 , 11504188 , and U1504626 ), the Natural Science Foundation of Zhejiang Province (Grant No. LZ17E020001 ), and K.C. Wong Magna Fund in Ningbo University . This work was supported by the National Natural Science Foundation of China (Grant Nos. 51772159, 51472125, 11504188, and U1504626), the Natural Science Foundation of Zhejiang Province (Grant No. LZ17E020001), and K.C. Wong Magna Fund in Ningbo University.

Funders	Funder number
K.C. Wong Magna Fund
National Natural Science Foundation of China	11504188, 51772159, 51472125, U1504626
Ningbo University
Natural Science Foundation of Zhejiang Province	LZ17E020001

Keywords

Mn ions
Photoluminescence
WLEDs

Access to Document

10.1016/j.ceramint.2018.08.006

Cite this

@article{d62ea603fe73409d871583b3ae309a4e,

title = "An investigation of Mn4+ doped BeAl2O4 single crystal for WLEDs application",

abstract = "A novel red-emitting Mn4+ doped BeAl2O4 single crystal is synthesized by a Czochralski technique. Narrow red emission is observed from the Mn4+ ions occupying Al3+ sites in distorted octahedrons. Crystal field parameter Dq, Racah parameters B and C are determined to be 2392, 1423 and 3332 cm−1, respectively. The value of Dq/B indicates that Mn4+ ions are in a weak crystal field. The quenching temperature and activation energy are calculated from the temperature-dependent measurement for emission intensity and decay time. A detailed discussion of thermal quenching mechanism reveals that the crossover via the 4T2 level is the main quenching route in the prepared material.",

keywords = "Mn ions, Photoluminescence, WLEDs",

author = "Jianxu Hu and Yun Zhao and Baojiu Chen and Haiping Xia and Yuanpeng Zhang and Huanqing Ye",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2018",

month = nov,

doi = "10.1016/j.ceramint.2018.08.006",

language = "English",

volume = "44",

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journal = "Ceramics International",

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T1 - An investigation of Mn4+ doped BeAl2O4 single crystal for WLEDs application

AU - Hu, Jianxu

AU - Zhao, Yun

AU - Chen, Baojiu

AU - Xia, Haiping

AU - Zhang, Yuanpeng

AU - Ye, Huanqing

PY - 2018/11

Y1 - 2018/11

N2 - A novel red-emitting Mn4+ doped BeAl2O4 single crystal is synthesized by a Czochralski technique. Narrow red emission is observed from the Mn4+ ions occupying Al3+ sites in distorted octahedrons. Crystal field parameter Dq, Racah parameters B and C are determined to be 2392, 1423 and 3332 cm−1, respectively. The value of Dq/B indicates that Mn4+ ions are in a weak crystal field. The quenching temperature and activation energy are calculated from the temperature-dependent measurement for emission intensity and decay time. A detailed discussion of thermal quenching mechanism reveals that the crossover via the 4T2 level is the main quenching route in the prepared material.

AB - A novel red-emitting Mn4+ doped BeAl2O4 single crystal is synthesized by a Czochralski technique. Narrow red emission is observed from the Mn4+ ions occupying Al3+ sites in distorted octahedrons. Crystal field parameter Dq, Racah parameters B and C are determined to be 2392, 1423 and 3332 cm−1, respectively. The value of Dq/B indicates that Mn4+ ions are in a weak crystal field. The quenching temperature and activation energy are calculated from the temperature-dependent measurement for emission intensity and decay time. A detailed discussion of thermal quenching mechanism reveals that the crossover via the 4T2 level is the main quenching route in the prepared material.

KW - Mn ions

KW - Photoluminescence

KW - WLEDs

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DO - 10.1016/j.ceramint.2018.08.006

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