镧系元素
兴奋剂
材料科学
离子
光电子学
纳米技术
无机化学
化学
有机化学
作者
Bo Gao,Lianyu Li,Zongwei Chen,Qun Xu
出处
期刊:Small
[Wiley]
日期:2023-11-15
卷期号:20 (13)
标识
DOI:10.1002/smll.202308427
摘要
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.
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