Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis
Authorized Users Only
2019
Authors
Alkan, GözdeMančić, Lidija

Tamura, Sayaka

Tomita, Koji
Tan, Zhenquan
Sun, Feifei
Rudolf, Rebeka
Ohara, Satoshi
Friedrich, Bernd
Milošević, Olivera

Article (Published version)

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Ag@ (Y0.95 Eu0.05)2O3 nanocomposites were synthesized by single step Ultrasonic Spray Pyrolysis (USP). 800 °C synthesis temperature and 1.5 l/ min air flow were determined as optimal USP parameters. A detailed parametric study was conducted on samples with varying silver contents and heat treatment conditions. The effect of silver in both as prepared and heat treated samples were elucidated in terms of structural and functional properties. Ag incorporation decreased luminescence efficiency due to the lack of crystallization of matrix and non-homogenous distribution of Eu and Ag in as prepared samples. Heat treatment improved luminescence by improved crystal quality for all samples; however, with increasing Ag content effect of heat treatment was more pronounced owing to uniform distribution of Ag. 2.5 wt% Ag addition followed by 2 h heat treatment after USP synthesis is suggested as the most efficient nanocomposite for red light emitting down converting phosphor applications.
Keywords:
doping / rare earth elements / ultrasonic spray pyrolysis / photoluminescence / noble metals / plasmonSource:
Advanced Powder Technology, 2019, 30, 7, 1409-1418Publisher:
- Elsevier
Projects:
- Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-172035)
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-45020)
Note:
- Peer-reviewed manuscript: http://dais.sanu.ac.rs/handle/123456789/6265
DOI: 10.1016/j.apt.2019.04.024
ISSN: 0921-8831