Near-infrared quantum cutting in Tb3+ and Yb3+-doped Y2O3 nanophosphors

Title
Near-infrared quantum cutting in Tb3+ and Yb3+-doped Y2O3 nanophosphors
Authors
박종구김선진이승용조소혜소반 칸아비짓 자다브
Keywords
quantum cutting; phosphor; Y2O3; energy transfer; Tb
Issue Date
2017-06
Publisher
Research on chemical intermediates
Citation
VOL 43, NO 6-3471
Abstract
Properties of the quantum-cutting phosphors are dependent on various factors such as dopant concentration, crystallinity, homogeneity, particle size and surface morphology. Effective control of the above parameters can enhance the quantum-cutting ability of the phosphor material. Nano-sized particles of Y2O3:Tb3+,Yb3+ were prepared with a solution-based co-precipitation method and subsequent calcination. Effective control of the reaction parameters and doping concentration helped to produce uniform nanostructures with high quantum-cutting efficiency up to 181.1 %. The energy transfer mechanism between Tb3+ and Yb3+ was studied by considering their spectroscopic properties and time-resolved spectroscopy. The high efficiency and small particle size of the quantum-cutting phosphor Y2O3:Tb3+,Yb3+ make it a suitable candidate for its application in solar cells.
URI
http://pubs.kist.re.kr/handle/201004/64889
ISSN
0922-6168
Appears in Collections:
KIST Publication > Article
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