Year: 2025
Type: article
Abstract: This study focuses on addressing the reflectivity reduction issue in La1–xSrxTiO3+δ during high-temperature preparation, which is caused by oxygen vacancy generation. Bulk samples of CeO2-doped La1–xSrxTiO3+δ with varying doping contents as a second phase and sintering temperatures were prepared. The phase composition, reflectivity, and valence states were thoroughly investigated. Introducing 10 wt.%CeO2 significantly suppressed the formation of oxygen vacancies. Thus, the occurrence of impurity levels caused by oxygen vacancies was reduced. This can further mitigate the reflection decrease caused by impurity levels as photon absorption traps. Additionally, the reduced pore structure achieved at 1450 °C contributed to improved reflectivity compared to pure La1–xSrxTiO3+δ. The findings suggest that this approach has great potential for reducing oxygen vacancies sensitivity in high-reflection ceramics under high-temperature conditions and preserving their optical properties.
Source: Materials
DOI: 10.3390/ma18112553
Authors: Wenzhi Li, Yichao Zhu, Zhiping He
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
OpenAlex ID: W4410840619