Defect modulation and luminescence improvement of Mn4+-activated La(Mg, Nb)O3 phosphor with improved stability for plant cultivation

Quan Liu; Zhuo Chen; Xinhe Chen; Pengyu Chen; Yi Zhu; Shuo Liu; Kai Yang; Bo Wei; Zhenyu Liu; Ka Leung Wong

doi:10.1039/d1tc04992e

Defect modulation and luminescence improvement of Mn⁴⁺-activated La(Mg, Nb)O₃ phosphor with improved stability for plant cultivation

Quan Liu
, Zhuo Chen
, Xinhe Chen
, Pengyu Chen
, Yi Zhu
, Shuo Liu
, Kai Yang
, Bo Wei^*
, Zhenyu Liu^*
, Ka Leung Wong^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

26 Citations (Scopus)

Abstract

The use of Mn⁴⁺-activated deep-red phosphors has continued to increase in plant growth lighting. Of all phosphors, the complex perovskite LaMg_0.66Nb_0.34O₃ (LMN) exhibiting high structural tunability is considered one of the most suitable structures. In this study, the representative LMN:Mn⁴⁺ was synthesized and a defect was introduced into the matrix to improve its thermal stability. Moreover, a computation method with density functional theory (DFT) was adopted to acquire the local crystal structure and the results showed that both the emission intensity and the thermal stability of the phosphors clearly improved. Importantly, we found that the emission intensity at 423 K still reached 82.4% of that at 298 K, which is crucial in plant cultivation applications.

Original language	English
Pages (from-to)	3472-3479
Number of pages	8
Journal	Journal of Materials Chemistry C
Volume	10
Issue number	9
DOIs	https://doi.org/10.1039/d1tc04992e
Publication status	Published - 7 Mar 2022

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@article{2c028c16a10843b494dfd918d6a61397,

title = "Defect modulation and luminescence improvement of Mn4+-activated La(Mg, Nb)O3 phosphor with improved stability for plant cultivation",

abstract = "The use of Mn4+-activated deep-red phosphors has continued to increase in plant growth lighting. Of all phosphors, the complex perovskite LaMg0.66Nb0.34O3 (LMN) exhibiting high structural tunability is considered one of the most suitable structures. In this study, the representative LMN:Mn4+ was synthesized and a defect was introduced into the matrix to improve its thermal stability. Moreover, a computation method with density functional theory (DFT) was adopted to acquire the local crystal structure and the results showed that both the emission intensity and the thermal stability of the phosphors clearly improved. Importantly, we found that the emission intensity at 423 K still reached 82.4\% of that at 298 K, which is crucial in plant cultivation applications.",

author = "Quan Liu and Zhuo Chen and Xinhe Chen and Pengyu Chen and Yi Zhu and Shuo Liu and Kai Yang and Bo Wei and Zhenyu Liu and Wong, \{Ka Leung\}",

note = "Funding Information: Quan Liu and Zhuo Chen contributed equally to this work. This work was supported by the Natural Science Foundation of Jiangsu Province (BK20191030), the Agriculture Science and Technology Innovation Project of Suzhou (SNG2021034), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (20KJA430006), the Six Talent Peaks Project of Jiangsu Province (NO. 2018-SWYY-001), the Hong Kong Research Grants Council General Research fund (HKBU 12300118), and the NSFC (21701136, 51902031). Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry",

year = "2022",

month = mar,

day = "7",

doi = "10.1039/d1tc04992e",

language = "English",

volume = "10",

pages = "3472--3479",

journal = "Journal of Materials Chemistry C",

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publisher = "Royal Society of Chemistry",

number = "9",

}

TY - JOUR

T1 - Defect modulation and luminescence improvement of Mn4+-activated La(Mg, Nb)O3 phosphor with improved stability for plant cultivation

AU - Liu, Quan

AU - Chen, Zhuo

AU - Chen, Xinhe

AU - Chen, Pengyu

AU - Zhu, Yi

AU - Liu, Shuo

AU - Yang, Kai

AU - Wei, Bo

AU - Liu, Zhenyu

AU - Wong, Ka Leung

N1 - Funding Information: Quan Liu and Zhuo Chen contributed equally to this work. This work was supported by the Natural Science Foundation of Jiangsu Province (BK20191030), the Agriculture Science and Technology Innovation Project of Suzhou (SNG2021034), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (20KJA430006), the Six Talent Peaks Project of Jiangsu Province (NO. 2018-SWYY-001), the Hong Kong Research Grants Council General Research fund (HKBU 12300118), and the NSFC (21701136, 51902031). Publisher Copyright: © 2022 The Royal Society of Chemistry

PY - 2022/3/7

Y1 - 2022/3/7

N2 - The use of Mn4+-activated deep-red phosphors has continued to increase in plant growth lighting. Of all phosphors, the complex perovskite LaMg0.66Nb0.34O3 (LMN) exhibiting high structural tunability is considered one of the most suitable structures. In this study, the representative LMN:Mn4+ was synthesized and a defect was introduced into the matrix to improve its thermal stability. Moreover, a computation method with density functional theory (DFT) was adopted to acquire the local crystal structure and the results showed that both the emission intensity and the thermal stability of the phosphors clearly improved. Importantly, we found that the emission intensity at 423 K still reached 82.4% of that at 298 K, which is crucial in plant cultivation applications.

AB - The use of Mn4+-activated deep-red phosphors has continued to increase in plant growth lighting. Of all phosphors, the complex perovskite LaMg0.66Nb0.34O3 (LMN) exhibiting high structural tunability is considered one of the most suitable structures. In this study, the representative LMN:Mn4+ was synthesized and a defect was introduced into the matrix to improve its thermal stability. Moreover, a computation method with density functional theory (DFT) was adopted to acquire the local crystal structure and the results showed that both the emission intensity and the thermal stability of the phosphors clearly improved. Importantly, we found that the emission intensity at 423 K still reached 82.4% of that at 298 K, which is crucial in plant cultivation applications.

UR - https://www.scopus.com/pages/publications/85129820366

U2 - 10.1039/d1tc04992e

DO - 10.1039/d1tc04992e

M3 - Journal article

AN - SCOPUS:85129820366

SN - 2050-7526

VL - 10

SP - 3472

EP - 3479

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 9

ER -

Defect modulation and luminescence improvement of Mn⁴⁺-activated La(Mg, Nb)O₃ phosphor with improved stability for plant cultivation

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