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説明:

A Eu2+ doped sulfureted NIR-emitting garnet phosphor Ca3(Sc, Eu)2Si3(O, S)12: Eu2+ is successfully designed and synthesized. Notably, a strategy for regulating the initial valence state of dopants is proposed by using prepared EuS instead of the conventional Eu2O3 as raw material, enhancing the NIR emission by 135 %. Moreover, a sulfuration strategy is further introduced to enhance the NIR emitting intensity and internal quantum efficiency by 192 % and 167.8 %, and to improve thermal stability by 154 % at 120 ◦C. The luminescence origin of the unusual broadband NIR emission is re-examined through chemical unit co-substitution strategy by introducing [Al3+–Hf4+] to replace [Sc3+–Si4+] ion pairs.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Garnet structure, Eu2+, Sulfuration strategy, Broadband NIR emission, pc-NIR LED

刊行年月日: 2024-08-24

出版者: Elsevier

掲載誌:

• JOURNAL OF COLLOID AND INTERFACE SCIENCE (ISSN: 00219797) vol. 678 p. 209-217

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5480

公開URL: https://doi.org/10.1016/j.jcis.2024.08.170

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更新時刻: 2026-02-14 20:22:43 +0900

MDRでの公開時刻: 2026-08-24 08:25:33 +0900