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Issue 7, 2012
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Broadband tunable near-infrared emission of Bi-doped composite germanosilicate glasses

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Abstract

A broadband near-infrared (NIR) emission from Bi-doped lithium aluminum germanosilicate glasses is observed when excited by an 808 nm laser diode (LD). The intensity of the NIR emission increases primarily, and then decreases with increasing GeO2 concentration. The optimized composition is 13Li2O–23Al2O3–20GeO2–43SiO2–1Bi2O3 (mol%). The peak position and intensity of the NIR emission depend strongly on excitation wavelength. We attribute the emissions at 1100 nm and 1260 nm to 3P13P0 transition of Bi+ and 2D3/24S3/2 transition of Bi0, respectively. The proposed model explains the observed NIR luminescence phenomena of Bi-doped glasses and fibers, which was previously unknown.

Graphical abstract: Broadband tunable near-infrared emission of Bi-doped composite germanosilicate glasses

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Publication details

The article was received on 02 Nov 2011, accepted on 12 Dec 2011 and first published on 06 Jan 2012


Article type: Paper
DOI: 10.1039/C2JM15606G
Citation: J. Mater. Chem., 2012,22, 3154-3159
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    Broadband tunable near-infrared emission of Bi-doped composite germanosilicate glasses

    N. Zhang, J. Qiu, G. Dong, Z. Yang, Q. Zhang and M. Peng, J. Mater. Chem., 2012, 22, 3154
    DOI: 10.1039/C2JM15606G

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