Broadband near-infrared emitting Cr3+-activated InGaO3(ZnO)4 phosphor and its application in pc-LEDs.
In: Materials Research Bulletin, Jg. 164 (2023-08-01), S. N.PAG
academicJournal
Zugriff:
• InGaO 3 (ZnO) 4 : Cr3+ is explored to be a very promising NIR broadband materials. • The IGOZ: Cr3+ phosphor shows high internal quantum efficiency. • The IGOZ: Cr3+ phosphor shows good thermal stability. • The packaged pc-LED has great application potential in portable devices as a light source. In broadband near-infrared (NIR) phosphor converted to light-emitting diodes (pc-LEDs), Cr3+-activated phosphors have received a lot of attention. Herein, we developed a novel InGaO 3 (ZnO) 4 : x Cr3+ (x = 0.001–0.02) with NIR broadband emission through a solid-state reaction at high temperature. Its excitation spectrum covers the blue light region, with the peak at 467 nm, which is suitable for blue light chip excitation. The optimum Cr3+ ion doping content is x = 0.01 and the emission spectrum ranges from 650 nm to 950 nm with a large full width at half maximum (FWHM) of 119 nm. Moreover, the internal quantum efficiency (IQE) of InGaO 3 (ZnO) 4 : 0.01Cr3+ phosphor is about 79%. Meanwhile, the phosphor exhibits good thermal stability due to the relatively weak electron-phonon coupling effect, and the emission intensity at 373 K can retain 57.7% of that at 303 K. The packaged pc-LED shows good NIR light penetration ability in spectral transmission tests, which indicates that the pc-LED has great application potential in portable devices as a light source. [Display omitted] [ABSTRACT FROM AUTHOR]
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Broadband near-infrared emitting Cr3+-activated InGaO3(ZnO)4 phosphor and its application in pc-LEDs.
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Autor/in / Beteiligte Person: | Chen, Shuyang ; Lin, Jianhua ; Han, Mingxiao ; Li, Jie ; Zhang, Qihao ; Chen, Yan ; Ling ; Wen, Yinuo ; Fu, Jie ; Deng, Degang ; Chen, Liang |
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Zeitschrift: | Materials Research Bulletin, Jg. 164 (2023-08-01), S. N.PAG |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 0025-5408 (print) |
DOI: | 10.1016/j.materresbull.2023.112280 |
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