Details

Autor(en) / Beteiligte

• Yu, Meidong
• Zhang, Yun
• Liu, Bo
• Liu, Jiandi
• Hu, Zuofu
• Ruan, Wen
• Sun, Xinyuan

Titel

Plasmon-enhanced upconversion luminescence in (mCu2-xS, NaYF4:Er/Yb)@ porous silica composites

Ist Teil von

• Ceramics international, 2023-06, Vol.49 (11), p.16700-16706

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The design of core–shell structures is significant for the applications of upconversion luminescent materials. Herein, a novel core–shell hybrid structure of (mCu2-xS, NaYF4:Er/Yb)@ porous silica composites was constructed using Cu2-xS nanoparticles and hexagonal NaYF4:Er/Yb particles for upconversion luminescence (UCL). Owing to the localized surface plasmon resonance (LSPR) coupling between Cu2-xS nanoparticles, the internal optical field of the composites was amplified, which induced more photons to participate in the upconversion process of (mCu2-xS, NaYF4:Er/Yb)@ porous silica composites. Furthermore, the UCL intensity of (mCu2-xS, NaYF4:Er/Yb)@ porous silica composites in the emission band of green was 45 times higher than that of NaYF4:Er/Yb@SiO2, and the quantum yield of the composites was 1.32%. The UCL enhancement mechanism of the composites was also investigated.