Luminescence of Nd3+ ions under excitation of CdSe quantum dots in a glass system: energy transfer

被引：20
|
作者：
Serqueira, E. O. [1 ]
Dantas, N. O. [2 ]
机构：
[1] Univ Fed Triangulo Mineiro, Dept Fis, ICENE, BR-38025180 Uberaba, MG, Brazil
[2] Univ Fed Uberlandia, Inst Fis, LNMIS, BR-38400902 Uberlandia, MG, Brazil
来源：
OPTICS LETTERS | 2014年 / 39卷 / 01期
关键词：
RARE-EARTH IONS; TRIVALENT LANTHANIDES; SPECTRAL INTENSITIES; NANOCRYSTALS; ACTINIDES; HO3; DY3; PM3; SM3;
D O I：
10.1364/OL.39.000131
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report rare evidence of energy transfer from CdSe quantum dots (QDs) to Nd3+ ions in a SNAB glass system using absorption electronic transitions of ion as a nonresonant excitation source. However, the luminescence band was observed at 880 nm (F-4(3/2) -> I-4(9/2) transition) under 409 nm excitation only when Nd3+ ions were embedded in the SNAB glass system with CdSe QDs. This happened because the Nd3+ ions absorbed the photons emitted by CdSe QDs with 409 nm excitation. Band overlap of the QD luminescence band and the ion optical absorption bands caused photon absorption and produced valleys in the QD luminescence spectrum. This overlap contributed to reduction in the lifetime F-4(3/2) state. (C) 2013 Optical Society of America
引用
收藏
页码：131 / 134
页数：4
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