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説明:

Equimolar Ca2+ and Zr4+ doping was implemented to establish novel garnet-type Gd3−xCaxAl2.95Ga2−xZrxO12:0.05Cr3+ (x = 0–2.0) far-red (FR) phosphors. The quantum efficiency and temperaturedependent luminescence analysis successfully produced the optimal x = 0.5 phosphor, which exhibited highly efficient (IQE = 92.8% and EQE = 31.6%) broadband FR-emission peaking at ∼714 nm (full-width at half-maximum ∼81 nm) and excellent thermal stability (95.5% at 423 K) under 450 nm light excitation. Its performance is superior to that of most reported Cr3+-activated FR-emitting garnet phosphors, and its emission spectrum can well superpose with the absorption band of the far-red phytochrome, endowing this phosphor with huge potential application in the construction of high-quality FR pc-LEDs used for plant lighting.

権利情報:

• In Copyright
  

キーワード: Far-red emission, Garnet, Cation substitution, Cr3+ luminescence

刊行年月日: 2025-10-13

出版者: Royal Society of Chemistry

掲載誌:

• DALTON TRANSACTIONS (ISSN: 14779226) vol. 54 issue. 43 p. 15980-15985

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5964

公開URL: https://doi.org/10.1039/d5dt01878a

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更新時刻: 2026-04-30 12:01:11 +0900

MDRでの公開時刻: 2026-10-13 08:28:24 +0900