White-light-emitting diodes(WLEDs)possess many merits,such as high efficiency and stability.Developing cost-effective,environmentally friendly,high-performance luminophores to achieve high-quality,full-spectrum,white ...White-light-emitting diodes(WLEDs)possess many merits,such as high efficiency and stability.Developing cost-effective,environmentally friendly,high-performance luminophores to achieve high-quality,full-spectrum,white lighting is of great importance to the construction and progress of WLEDs.In this work,solid-state,highly luminescent orange-emitting nanoclusters(MgCl_(2)-Lys-Ag/Au NCs)were prepared via the salt-induced precipitation of Lys-Ag/Au NCs from solution,which showed a high absolute quantum yield of 44.5%.A cyan-emitting metal-organic framework(MOF)-like nanomaterial(named Fe@TAOH)was also prepared by the self-assembly of the coordination compound of Fe^(3+)and TAOH acted upon by H_(3)PO_(4) via H-bonding andπ-πstacking interactions,which showed an emission peak at 485 nm and an absolute quantum yield of 21.7%.The potential application of the two facile-synthesis,low toxicity,and highly luminescent materials in WLEDs was investigated.The WLEDs was constructed by coating powdered Fe@TAOH and MgCl_(2)-Lys-Ag/Au NCs samples on commercial GaN LED chip with 365 nm emissions,and it exhibited acceptable white light characteristics with a CIE color coordinates and a color rendering index(CRI)of(0.28,0.34)and 79.6,respectively,implying good prospects in the field of WLEDs.展开更多
基金supported by the National Natural Science Foundation of China (No. 22074007)。
文摘White-light-emitting diodes(WLEDs)possess many merits,such as high efficiency and stability.Developing cost-effective,environmentally friendly,high-performance luminophores to achieve high-quality,full-spectrum,white lighting is of great importance to the construction and progress of WLEDs.In this work,solid-state,highly luminescent orange-emitting nanoclusters(MgCl_(2)-Lys-Ag/Au NCs)were prepared via the salt-induced precipitation of Lys-Ag/Au NCs from solution,which showed a high absolute quantum yield of 44.5%.A cyan-emitting metal-organic framework(MOF)-like nanomaterial(named Fe@TAOH)was also prepared by the self-assembly of the coordination compound of Fe^(3+)and TAOH acted upon by H_(3)PO_(4) via H-bonding andπ-πstacking interactions,which showed an emission peak at 485 nm and an absolute quantum yield of 21.7%.The potential application of the two facile-synthesis,low toxicity,and highly luminescent materials in WLEDs was investigated.The WLEDs was constructed by coating powdered Fe@TAOH and MgCl_(2)-Lys-Ag/Au NCs samples on commercial GaN LED chip with 365 nm emissions,and it exhibited acceptable white light characteristics with a CIE color coordinates and a color rendering index(CRI)of(0.28,0.34)and 79.6,respectively,implying good prospects in the field of WLEDs.
