Electric polarization-enhanced optical thermometry in lanthanide ion-doped ferroelectric Bi<sub>4</sub>Ti<sub>3</sub>O<sub>12</sub> nanosheets
The demand for temperature measurement in optoelectronic integration has prompted research on advanced luminescent materials. Here, ferroelectric Bi<sub>4</sub>Ti<sub>3</sub>O<sub>12</sub>:Yb<sup>3+</sup>/Er<sup>3+</sup>/Nd<sup>3+</sup> nanosheets were designed for optical thermometry. The transition emissions of nanosheets were significantly enhanced through electric polarization engineering. By utilizing the fluorescence intensity ratio of emissions from Nd<sup>3+</sup> and Er<sup>3+</sup> ions, the poled system achieved notable absolute and relative sensing sensitivities of 3.03 and 2.52% K<sup>-1</sup>, respectively. These results highlight the multi-band luminescence and optoelectronic coupling characteristics of lanthanide ion-doped ferroelectric nanosheets and suggest that electric field polarization-enhanced temperature measurement can serve a reference for enhancing optical sensing capabilities.
Authors
- Gongxun Bai (ORCID: https://orcid.org/0000-0002-4066-0359)
- Jiawen Wang (ORCID: https://orcid.org/0000-0003-2757-631X)
- Shenghuang Lin (ORCID: https://orcid.org/0000-0001-9552-4680)
- Lihui Huang (ORCID: https://orcid.org/0000-0002-4112-1752)
- Shiqing Xu (ORCID: https://orcid.org/0000-0002-5947-6121)
Institutions
- Songshan Lake Materials Laboratory (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-01-23
- DOI
- https://doi.org/10.1364/ol.542243
- Citations
- 8
- Primary Topic
- Optical and Acousto-Optic Technologies
- Type
- article
- Field-Weighted Citation Impact
- 9.97
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Zhejiang Province