Near‐Infrared Broadband Emission for High Electroluminescence Efficiency by Cr<sup>3+</sup>/In<sup>3+</sup>‐Doped Germanate Phosphors
Abstract In this paper, a series of KGaGeO4:0.01Cr 3+ , xIn 3+ (KGGO:0.01Cr 3+ , xIn 3+ , x=0~0.08) phosphors were synthesized by high temperature method. KGGO:0.01Cr 3+ has a far red emission in the range of 600~900 nm ascribing to the 4T2→4 A2 spin‐allowed transition of Cr 3+ . With the incorporation of In 3+ , KGGO:Cr 3+ , In 3+ 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:0.01Cr 3+ , 0.02In 3+ is as high as 19 % under the output power of 25 mW, which can be applied in the night vision technology and microbial growth.
Authors
- Tao Han (ORCID: https://orcid.org/0000-0002-7396-1676)
- Qinping Qiang
- Peng Su (ORCID: https://orcid.org/0000-0001-7739-2864)
- Е. Ф. Полисадова (ORCID: https://orcid.org/0000-0002-4644-5967)
- Bitao Liu (ORCID: https://orcid.org/0000-0002-6210-3801)
- Tianchun Lang (ORCID: https://orcid.org/0000-0002-7867-3307)
- Lingling Peng (ORCID: https://orcid.org/0000-0002-1930-9919)
- Qunyang Zhao
Institutions
- Chongqing University of Science and Technology (CN)
- National Research Tomsk State University (RU)
- Tomsk Polytechnic University (RU)
- Chongqing University of Arts and Sciences (CN)
- Chongqing University of Technology (CN)
Publication Details
- Journal
- European Journal of Inorganic Chemistry
- Published
- 2024-11-18
- DOI
- https://doi.org/10.1002/ejic.202400604
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China