Pulsed laser assisted synthesis of Ho3+/Yb3+ codoped CaMoO4 nanocolloid and its upconversion luminescence

Authors :: Sungwook Mhin
Jeong Ho Ryu
Kyoungwon Cho
Jaeha Choi
Jung-Il Lee
Kang Min Kim
Source :: Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena. 33:041201
Publication Year :: 2015
Publisher :: American Vacuum Society, 2015.
Abstract: The authors report a novel synthetic route for Ho3+/Yb3+ codoped calcium molybdate (CaMoO4) nanoparticles by pulsed laser ablation in ethanol. Well-dispersed Ho3+/Yb3+ codoped CaMoO4 nanocolloid was prepared without any surfactant. Crystallographic information, microstructure, and the upconversion (UC) luminescent properties of the nanocolloid were investigated. Under the excitation at 980 nm, Ho3+/Yb3+ codoped CaMoO4 nanocolloid exhibited strong yellow emission visible to the naked eyes, which is the combination of green emission near 542 nm and strong red emission around 656 nm. Based on the pump power dependence, UC mechanism of Ho3+/Yb3+ codoped CaMoO4 nanocolloid was discussed in detail.

ISSN :: 21662754 and 21662746
Volume :: 33
Database :: OpenAIRE
Journal :: Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena
Accession number :: edsair.doi...........0f1abf16d3c6d1d4558ae54b754698aa
Full Text :: https://doi.org/10.1116/1.4922024

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