Pressure Coupled Lanthanide Ion Doping to Enhance Optical Properties in BaTiO3

Self‐trapped excitons (STEs) typically give broadband photoluminescence emission with a large Stokes shift, which is important for the enhancement of the optical properties of materials. Here, low‐dimensional La‐doped BaTiO3 nanocrystals with defects are prepared using supercritical CO2 (SC CO2). Th...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2024-03, Vol.20 (13), p.e2308427-n/a
Main Authors: Gao, Bo, Li, Lianyu, Chen, Zongwei, Xu, Qun
Format: Article
Language:English
Subjects:
Barium titanates
Broadband
Carbon dioxide
Doping
Excitons
high pressure
Lanthanum
Material properties
Nanocrystals
Optical properties
Photoluminescence
self‐trapped excitons
supercritical carbon dioxide
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Summary:Self‐trapped excitons (STEs) typically give broadband photoluminescence emission with a large Stokes shift, which is important for the enhancement of the optical properties of materials. Here, low‐dimensional La‐doped BaTiO3 nanocrystals with defects are prepared using supercritical CO2 (SC CO2). The generation of the STEs is facilitated by doping La3+ ions and introducing CO2 pressure, which effectively enhance the luminescence intensity of BaTiO3. This discovery shows that the La ion doping concentration can modulate the photoluminescence of BaTiO3 nanocrystals under pressure. This work deepens the understanding of the influence of rare‐earth‐doped luminescent materials under pressure and provides insight to improve the capabilities of optical devices. Low‐dimensional La‐doped BaTiO3 nanocrystals are prepared using supercritical CO2 (SC CO2). The generation of the self‐trapped excitons is facilitated by doping La3+ ions and introducing CO2 pressure, which effectively enhance the optical properties of BaTiO3.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.202308427