Journal
NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-020-16649-z
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Funding
- National Key R&D Program of China [2018YFB1107200]
- National Natural Science Foundation of China [61775192, 51902286, 61905215, 51772270]
- open funds of State Key Laboratory of Precision Spectroscopy (East China Normal University)
- Wuhan Optoelectronic National Research Center (Huazhong University of Science and Technology)
- Fundamental Research Funds for the Central Universities
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The development of high-power white light-emitting diodes demands highly efficient and stable all-inorganic color converters. In this respect, phosphor-glass/ceramic composites show great promise as they could combine the merits of high quantum efficiency of phosphors and high chemical and thermal stabilities of glass/ceramic matrices. However, strong interfacial reaction between phosphors and matrices at high temperature results in quantum efficiency loss of the embedded phosphors, and traditional solutions rely on high-pressure consolidation techniques. Here we report the intrinsic inhibition of interfacial reaction by using silica glass rather than multicomponent glasses as the matrix. The embedment of phosphors is achieved via a pressureless sintering method, rendering these color-tunable phosphor-glass composites not only accessible to three-dimensional printing technique, but also highly efficient (internal quantum efficiency >90.0%), thermally stable at 1200 degrees C and hydrothermally stable at 200 degrees C. Our results provide a facile and general strategy for developing all-inorganic functional composites.
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