Journal
ADVANCED OPTICAL MATERIALS
Volume 4, Issue 3, Pages 427-434Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201500572
Keywords
carbon dots; phosphors; tunable color; sensors; tunable color displays
Categories
Funding
- National Natural Science Foundations of China [51203053, 51372091]
- Teamwork Projects - Guangdong Natural Science Foundation [S2013030012842]
- Key Academic Program of 3rd phase '211 Project' of South China Agricultural University
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A series of carbon dots (CDs) grafted CaAl12O19:Mn4+ (CAO) color-tunable hybrid phosphors have been synthesized via a facile sol-gel method. Through the hydrolysis and condensation reactions of the silica precursor, CDs can be incorporated into highly flexible hybrid materials through combining with a CaAl12O19:Mn4+ phosphor within silica gel networks for the fabrication of flexible displays and multicolor luminescent materials. By tuning the mass ratio of CDs/CAO and by adjusting the excitation wavelength, the color of the luminescence can be systematically tailored from purplish-red (0.504, 0.250) to greenish-blue (0.238, 0.192). Furthermore, the temperature-dependent luminescent properties of the CDs/CAO phosphors makes them suitable as thermometers with a wide linear temperature sensing range from 80 to 300 K.
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