Cr3+/In3+掺杂锗酸盐荧光粉的高电致发光效率近红外宽带发射

IF 1.8 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR European Journal of Inorganic Chemistry Pub Date : 2024-11-18 DOI:10.1002/ejic.202400604

Peng Su, Qunyang Zhao, Tianchun Lang, Lingling Peng, Elena Polisadova, Qinping Qiang, Bitao Liu, Tao Han

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摘要

本文采用高温法制备了KGGO:0.01Cr3+, xIn3+ (KGGO:0.01Cr3+, xIn3+, x=0~0.08)系列荧光粉。由于Cr3+的4T2→4a2自旋允许跃迁，KGGO:0.01Cr3+在600~900 nm范围内有远红发射。在KGGO:Cr3+的掺入下，In3+在700~ 1200nm范围内呈现出近红外宽带发射，发射峰红移136nm，频宽为185nm。在输出功率为25 mW时，KGGO:0.01Cr3+， 0.02In3+制备的近红外pc-LED电致发光效率高达19%，可应用于夜视技术和微生物生长。

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Near-Infrared Broadband Emission for High Electroluminescence Efficiency by Cr3+/In3+-Doped Germanate Phosphors

In this paper, a series of KGaGeO4:0.01Cr³⁺, xIn³⁺ (KGGO:0.01Cr³⁺, xIn³⁺, x=0~0.08) phosphors were synthesized by high temperature method. KGGO:0.01Cr³⁺ has a far red emission in the range of 600~900 nm ascribing to the 4T2→4 A2 spin-allowed transition of Cr³⁺. With the incorporation of In³⁺, KGGO:Cr³⁺, In³⁺ shows a near-infrared (NIR) broadband emission in the range of 700~1200 nm, with red shift of the emission peak by 136 nm, and FWHM of 185 nm. The electroluminescence efficiency of NIR pc-LED prepared by KGGO:0.01Cr³⁺, 0.02In³⁺ is as high as 19 % under the output power of 25 mW, which can be applied in the night vision technology and microbial growth.

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来源期刊

European Journal of Inorganic Chemistry 化学-无机化学与核化学

CiteScore

4.30

自引率

4.30%

发文量

419

审稿时长

1.3 months

期刊介绍： The European Journal of Inorganic Chemistry (2019 ISI Impact Factor: 2.529) publishes Full Papers, Communications, and Minireviews from the entire spectrum of inorganic, organometallic, bioinorganic, and solid-state chemistry. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies. The following journals have been merged to form the two leading journals, European Journal of Inorganic Chemistry and European Journal of Organic Chemistry: Chemische Berichte Bulletin des Sociétés Chimiques Belges Bulletin de la Société Chimique de France Gazzetta Chimica Italiana Recueil des Travaux Chimiques des Pays-Bas Anales de Química Chimika Chronika Revista Portuguesa de Química ACH—Models in Chemistry Polish Journal of Chemistry The European Journal of Inorganic Chemistry continues to keep you up-to-date with important inorganic chemistry research results.