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Preparation and Properties of Carbon Dot‐Grafted CaAl 12 O 19 :Mn 4+ Color‐Tunable Hybrid Phosphor
Author(s) -
Li Wei,
Zhang Haoran,
Chen Shi,
Liu Yingliang,
Zhuang Jianle,
Lei Bingfu
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201500572
Subject(s) - phosphor , materials science , luminescence , carbon fibers , sol gel , fabrication , hybrid material , chemical engineering , analytical chemistry (journal) , optoelectronics , nanotechnology , composite material , organic chemistry , composite number , medicine , chemistry , alternative medicine , pathology , engineering
A series of carbon dots (CDs) grafted CaAl 12 O 19 :Mn 4+ (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 CaAl 12 O 19 :Mn 4+ 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.