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Silver nanoparticles enhanced luminescence and stability of CsPbBr 3 perovskite quantum dots in borosilicate glass
Author(s) -
Zhang Ke,
Zhou Dacheng,
Qiu Jianbei,
Long Zhangwen,
Zhu Rui,
Wang Qi,
Lai Junan,
Wu Hao,
Zhu Congcong
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16966
Subject(s) - photoluminescence , quantum dot , materials science , luminescence , surface plasmon resonance , doping , nanoparticle , borosilicate glass , perovskite (structure) , absorption (acoustics) , silver nanoparticle , absorption spectroscopy , optoelectronics , analytical chemistry (journal) , nanotechnology , chemical engineering , optics , chemistry , composite material , physics , chromatography , engineering
Series of silver nanoparticles (NPs) embedded CsPbBr 3 quantum dots (QDs) glass was synthesized via the melt‐quench method. Ag NPs and CsPbBr 3 QDs coexist in the TEM image of the Ag‐doped glass sample. Photoluminescence (PL) spectra show that the 0.1 molar ratio Ag 2 O‐doped sample had a PL intensity 2.37 times than the undoped sample. This increase is generated by localized surface plasmon resonance coupling between the Ag NPs and CsPbBr 3 QDs. Excessive Ag doping weakens the PL intensity due to spectral self‐absorption of the Ag NP surface plasmon resonance (SPR). Self‐adsorption of SPR is detrimental to luminescence properties because it increases the amount of photogenerated charge carriers, which proceed through nonradiative relaxation pathways. In addition, stability results of Ag NP‐doped‐CsPbBr 3 QD glass show that they have excellent stability. This study on Ag NP‐doped‐CsPbBr 3 QD glass provides a new idea for the future development of perovskite QD optoelectronic devices.