Optical properties of Eu3+ :CsGd2F7 downconversion phosphor

被引：19

作者：

Karbowiak, M

Mech, A

Ryba-Romanowski, W

机构：

[1] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland

[2] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 114卷 / 01期

关键词：

downconversion; quantum cutting; vacuuni ultraviolet; phosphor; CsGd2F7;

D O I：

10.1016/j.jlumin.2004.12.004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Luminescence spectra and excitation spectra in 150-420 nm spectral region have been recorded at room temperature for polycrystalline sample of (0.5%)Eu3+:CsGd2F7. The relatively intense emission has been observed from D-5(3), D-5(2), and D-5(1) levels. Emission and excitation spectra prove that the excitation energy is efficiently transferred from the (6)G(J) and I-6(j) levels of Gd3+ ions to Eu3+ ions. The visible quantum cutting via downconversion has been detected, with efficiency of the cross-relaxation step of similar to 50%. (c) 2004 Elsevier B.V. All rights reserved.

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页码：65 / 70

页数：6

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