@article{Xu2021, 
author = {Hongyi Xu and Wenjing Yu and Kai Pan and Guofeng Wang and Peifen Zhu},
title = {Confinement and antenna effect for ultrasmall Y2O3:Eu3+ nanocrystals supported by MOF with enhanced near-UV light absorption thereby enhanced luminescence and excellently multifunctional applications},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {3},
pages = {720-729},
keywords = {confinement effect, antenna effect, enhanced luminescence, ultrasmall Y2O3:Eu3+ nanocrystals, MOFs, multifunctional applications},
url = {https://www.sciopen.com/article/10.1007/s12274-020-3104-2},
doi = {10.1007/s12274-020-3104-2},
abstract = {A novel host-guest luminous system with enhanced near-UV light absorption thereby enhanced luminescence are designed based on the synergism of quantum confinement, spatial confinement, and antenna effect, where ultrasmall Y2O3:Eu3+ nanocrystals are fixed inside MOF (Eu/Y-BTC) as supporting structure. The Eu/Y-BTC not only limits the size and leads to lattice distortion of Y2O3:Eu3+ nanocrystals and controls the distance between nanocrystals, but also promotes the light absorption and emission. The significantly red-shifted and broadened charge transfer band of Y2O3:Eu3+/(Eu/Y-BTC) leads to the excellent applications of Y2O3:Eu3+ in white light-emitting diodes (LEDs). Our results show that white light with superior color quality (CRI>90) and extremely high luminous efficacy (an LER of 335 lm/W) could be achieved using Y2O3:Eu3+/(Eu/Y-BTC) as red phosphor. The Y2O3:Eu3+/ (Eu/Y-BTC) also improves the photoelectric performance of dye-sensitized solar cells (DSSCs), not only because Y2O3:Eu3+/(Eu/Y-BTC) has a large specific surface area and the adsorption amount of the dye is increased, but also because the valence band position of Y2O3:Eu3+/(Eu/Y-BTC) is 2.41 eV, which can provide an additional energy level between the TiO2 and dye, promoting electron transfer. For these advantageous features, the multifunctional Y2O3:Eu3+/(Eu/Y-BTC) composite product will open new avenues in white LEDs and DSSCs.}
}