TY  - JOUR
AU  - Seno, Carlotta
AU  - Reichholf, Nico
AU  - Salutari, Francesco
AU  - Spadaro, Maria Chiara
AU  - Ivanov, Yurii P.
AU  - Divitini, Giorgio
AU  - Gogos, Alexander
AU  - Herrmann, Inge K.
AU  - Arbiol, Jordi
AU  - Smet, Philippe F.
AU  - De Roo, Jonathan
TI  - Epitaxial Core/Shell Nanocrystals of (Europium-Doped) Zirconia and Hafnia
JO  - Journal of the American Chemical Society
VL  - 146
IS  - 30
SN  - 0002-7863
CY  - Washington, DC
PB  - ACS Publications
M1  - PUBDB-2025-00163
SP  - 20550-20555
PY  - 2024
AB  - A careful design of the nanocrystal architecture can strongly enhance the nanocrystal function. So far, this strategy has faced a synthetic bottleneck in the case of refractory oxides. Here we demonstrate the epitaxial growth of hafnia shells onto zirconia cores and pure zirconia shells onto europium-doped zirconia cores. The core/shell structures are fully crystalline. Upon shelling, the optical properties of the europium dopant are dramatically improved (featuring a more uniform coordination and a longer photoluminescence lifetime), indicating the suppression of nonradiative pathways. These results launch the stable zirconium and hafnium oxide hosts as alternatives for the established NaYF4 systems. 
LB  - PUB:(DE-HGF)16
C6  - pmid:39038812
UR  - <Go to ISI:>//WOS:001275521800001
DO  - DOI:10.1021/jacs.4c05037
UR  - https://bib-pubdb1.desy.de/record/622051
ER  -