Chromium ion pair luminescence: a strategy in broadband near- infrared light-emitting diode design

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dc.contributor.authorRajendran, Ven_AU
dc.contributor.authorFang, MHen_AU
dc.contributor.authorHuang, WTen_AU
dc.contributor.authorMajewska, Nen_AU
dc.contributor.authorLesniewski, Ten_AU
dc.contributor.authorMahlik, Sen_AU
dc.contributor.authorLeniec, Gen_AU
dc.contributor.authorKazmarek, SMen_AU
dc.contributor.authorPang, WKen_AU
dc.contributor.authorPeterson, VKen_AU
dc.contributor.authorLu, KMen_AU
dc.contributor.authorChang, Hen_AU
dc.contributor.authorLiu, RSen_AU
dc.date.accessioned2021-12-22T19:59:24Zen_AU
dc.date.available2021-12-22T19:59:24Zen_AU
dc.date.issued2021-11-04en_AU
dc.date.statistics2021-12-15en_AU
dc.description.abstractPortable near-infrared (NIR) light sources are in high demand for applications in spectroscopy, night vision, bioimaging, and many others. Typical phosphor designs feature isolated Cr3+ ion centers, and it is challenging to design broadband NIR phosphors based on Cr3+–Cr3+ pairs. Here, we explore the solid-solution series SrAl11.88–xGaxO19:0.12Cr3+ (x = 0, 2, 4, 6, 8, 10, and 12) as phosphors featuring Cr3+–Cr3+ pairs and evaluate structure–property relations within the series. We establish the incorporation of Ga within the magentoplumbite-type structure at five distinct crystallographic sites and evaluate the effect of this incorporation on the Cr3+–Cr3+ ion pair proximity. Electron paramagnetic measurements reveal the presence of both isolated Cr3+ and Cr3+–Cr3+ pairs, resulting in NIR luminescence at approximately 650–1050 nm. Unexpectedly, the origin of broadband NIR luminescence with a peak within the range 740–820 nm is related to the Cr3+–Cr3+ ion pair. We demonstrate the application of the SrAl5.88Ga6O19:0.12Cr3+ phosphor, which possesses an internal quantum efficiency of ∼85%, a radiant flux of ∼95 mW, and zero thermal quenching up to 500 K. This work provides a further understanding of spectral shifts in phosphor solid solutions and in particular the application of the magentoplumbites as promising next-generation NIR phosphor host systems. © 2021 American Chemical Societyen_AU
dc.description.sponsorshipThis work was financially supported by the Ministry of Science and Technology in Taiwan (Contracts MOST 109-2113-M-002-020-MY3 and MOST 110-2923-M-002-017-MY3), the National Science Center Poland Grant Opus (Nos. 2018/31/B/ST4/00924 and 2019/33/B/ST3/00406), and the National Center for Research and Development Poland Grant (No. PL-TW/VIII/1/2021).en_AU
dc.identifier.citationRajendran, V., Fang, M.-H., Huang, W.-T., Majewska, N., Lesniewski, T., Mahlik, S., Leniec, G., Kaczmarek, S. M., Pang, W. K., Peterson, V. K., Lu, K.-M., Chang, H. & Liu, R. S. (2021). Chromium ion pair luminescence: a strategy in broadband near-infrared light-emitting diode design. Journal of the American Chemical Society, 143(45), 19058–19066. doi:10.1021/jacs.1c08334en_AU
dc.identifier.issn1520-5126en_AU
dc.identifier.issue45en_AU
dc.identifier.journaltitleJournal of the American Chemical Societyen_AU
dc.identifier.pagination19058–19066en_AU
dc.identifier.urihttps://doi.org/10.1021/jacs.1c08334en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12644en_AU
dc.identifier.volume143en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectPhosphorsen_AU
dc.subjectLuminescenceen_AU
dc.subjectSensorsen_AU
dc.subjectIonsen_AU
dc.subjectChromium ionsen_AU
dc.subjectQuantum efficiencyen_AU
dc.subjectLight emitting diodesen_AU
dc.titleChromium ion pair luminescence: a strategy in broadband near- infrared light-emitting diode designen_AU
dc.typeJournal Articleen_AU
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