@article{Bao2022, 
author = {Shan Bao and Haiyue Yu and Guoyang Gao and Hongyang Zhu and Dingsheng Wang and Peifen Zhu and Guofeng Wang},
title = {Rare-earth single atom based luminescent composite nanomaterials: Tunable full-color single phosphor and applications in WLEDs},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {4},
pages = {3594-3605},
keywords = {luminescence, white light-emitting diodes, single atoms, single phosphor},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3886-x},
doi = {10.1007/s12274-021-3886-x},
abstract = {High-quality single-component white phosphors are instrumental in realizing high-efficiency devices. Rare earth fluorides and carbon quantum dots have great potential in the white light-emitting diode (WLED) field due to their unique advantages. Here, Rare-earth single atom based NaGdF4:Tb3+/Eu3+@C:N/Eu3+ single phosphor with tunable full-color luminescence was reported. The results of density functional theory (DFT) calculation and experimental characterization show that C atoms cannot be replaced by Eu3+, but C atoms are more favorable for anchoring Eu3+ single atoms. The DFT was employed to optimize the structures of the C:N/Eu3+ and NaGdF4:Tb3+/Eu3+, and calculate the work function, optical properties, and charge density difference. The obtained tunable full-color single phosphor can emit stable light from blue to red or even white. The constructed WLED devices also have stable and excellent color performance, that is, a color rendering index of up to 95 and a lower color temperature, and it has broad application possibilities in WLEDs.}
}