Core-shell-like Y2O3: ( Tb3+- Yb3+), Li+ /CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion

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	Core-shell-like Y2O3: ( Tb3+- Yb3+), Li+ /CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion
	Wu X. J. ; Zhang Z. Z. ; Meng F. Z. ; Yu Y. N. ; Han L. ; Liu X. J. ; Meng J.
刊名	Nanoscale
	2014
卷号	6 期号:9 页码:4745-4749
ISSN号	ISBN/2040-3364
英文摘要	Combination with semiconductors is a promising approach to the realization of broadband excitation of light conversion materials based on rare earth compounds, to boost the energy efficiency of silicon solar cells. Cd1-xZnxS is a wide bandgap semiconductor with large exciton binding energy. By changing its composition, the bandgap of Cd1-xZnxS can be tuned to match the absorption of trivalent lanthanide (Ln) ions, which makes it a competent energy donor for the Ln(3+)-Yb3+ couple. In this work, we designed a clean route to a broadband down-converter based on a core-shell-like Y2O3:[(Tb3+-Yb3+), Li+]/Cd0.81Zn0.19S (CdZnS) heterostructure. By hot-pressing and subsequent annealing of a Y2O3:[(Tb3+ -Yb3+), Li+]/CdZnS mixture, highly pure CdZnS was sublimated and deposited on the Y2O3:[(Tb3+-Yb3+), Li+] grains while maintaining the original composition of the precursor. The CdZnS shell acted as a light absorber and energy donor for the Tb3+-Yb3+ quantum cutting couple. Because the use of solvents was avoided during the formation of the heterostructures, few impurities were incorporated into the samples, and the non-radiative transition was therefore markedly suppressed. The Y2O3:[(Tb3+-Yb3+), Li+]/CdZnS heterostructures possess strong near-infrared (NIR) luminescence from Yb3+. Broadband down-conversion to the Yb3+ NIR emission was obtained in a wide range of 250-650 nm.
收录类别	SCI ; EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/43812]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wu X. J.,Zhang Z. Z.,Meng F. Z.,et al. Core-shell-like Y2O3: ( Tb3+- Yb3+), Li+ /CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion[J]. Nanoscale,2014,6(9):4745-4749.
APA	Wu X. J..,Zhang Z. Z..,Meng F. Z..,Yu Y. N..,Han L..,...&Meng J..(2014).Core-shell-like Y2O3: ( Tb3+- Yb3+), Li+ /CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion.Nanoscale,6(9),4745-4749.
MLA	Wu X. J.,et al."Core-shell-like Y2O3: ( Tb3+- Yb3+), Li+ /CdZnS heterostructure synthesized by super-close-space sublimation for broadband down-conversion".Nanoscale 6.9(2014):4745-4749.