Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95466
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Biology and Chemical Technology | en_US |
dc.creator | Zhu, H | en_US |
dc.creator | Feng, S | en_US |
dc.creator | Kong, Z | en_US |
dc.creator | Huang, X | en_US |
dc.creator | Peng, L | en_US |
dc.creator | Wang, J | en_US |
dc.creator | Wong, WY | en_US |
dc.creator | Zhou, Z | en_US |
dc.creator | Xia, M | en_US |
dc.date.accessioned | 2022-09-19T02:22:08Z | - |
dc.date.available | 2022-09-19T02:22:08Z | - |
dc.identifier.issn | 0169-4332 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95466 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | © 2021 Elsevier B.V. All rights reserved. | en_US |
dc.rights | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Zhu, H., et al. (2021). "Bi3+ occupancy rearrangement in K2-xAxMgGeO4 phosphor to achieve ultra-broad-band white emission based on alkali metal substitution engineering." Applied Surface Science 563: 150252 is available at https://dx.doi.org/10.1016/j.apsusc.2021.150252. | en_US |
dc.subject | K2MgGeO4:Bi3+ | en_US |
dc.subject | Phosphor | en_US |
dc.subject | Substitution engineering | en_US |
dc.subject | Tunable emission | en_US |
dc.subject | Ultra-broad-band white emission | en_US |
dc.subject | WLED | en_US |
dc.title | Bi³⁺ occupancy rearrangement in K₂₋ₓAₓMgGeO₄ phosphor to achieve ultra-broad-band white emission based on alkali metal substitution engineering | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 563 | en_US |
dc.identifier.doi | 10.1016/j.apsusc.2021.150252 | en_US |
dcterms.abstract | Ultra-broad-band white emitting phosphors have a wide application prospect in the new generation of illumination systems. Due to the sensitivity of Bi³⁺ to the surrounding environment, it exhibits different luminescence properties in different crystallographic sites, which makes it easy to achieve white emission. Cationic substitution engineering is the most effective strategy for controlling the environment around Bi-site and realizing the spectrum tuning. Herein, we conducted substitution engineering in K₂MgGeO₄:Bi³⁺ (KMGO:Bi³⁺ ) that uses alkali metal A+ (A = Li, Na, Rb) to substitute K+. The difference in emission spectrum excited at various wavelengths is related to extra luminescent centers generation and Bi³⁺ occupancy rearrangement in KMGO:Bi³⁺ under the influence of Li+ and Na+, which also leads to the expansion of full widths at half-maximum (FWHM) to 204 nm forming a bright white emission. Besides, the modulation of Rb+ increases the activation energy and enhances its thermal stability to 88.66%. The high Ra values (93.4) of the fabricated WLED indicate that K₁.₄₅₆Na₀.₅₄MgGeO₄:0.004Bi³⁺ could be used as a single-component white phosphor in solid-state lighting. Our research shows that alkali metal substitution engineering is of great significance to controlling the luminescence emission and improving the thermal stability of luminescent materials. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Applied surface science, 15 Oct. 2021, v. 563, 150252 | en_US |
dcterms.isPartOf | Applied surface science | en_US |
dcterms.issued | 2021-10-15 | - |
dc.identifier.scopus | 2-s2.0-85107545044 | - |
dc.identifier.eissn | 1873-5584 | en_US |
dc.identifier.artn | 150252 | en_US |
dc.description.validate | 202209 bcww | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ABCT-0029 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | NSFC; Hunan provincial Engineering Technology Research Center for Optical Agriculture; Scientific Research Fund of Hunan Provincial Education Department; Distinguished Youth Foundation of Hunan Province; Natural Sciences Foundation of Hunan agricultural university; Hong Kong Polytechnic University; Ms Clarea Au for the Endowed Professorship in Energy | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 52511039 | - |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Wong_Bi3_Occupancy_Rearrangement.pdf | Pre-Published version | 4.25 MB | Adobe PDF | View/Open |
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