Solution-Based Deposition of Transparent Eu-Doped Titanium Oxide Thin Films for Potential Security Labeling and UV Screening

Nanomaterials

Laura Khamkhash¹  Izumi Taniguchi²  TimurSh. Atabaev³  Sagyntay Sarsenov³  Anara Molkenova³  IgorV. Shvets⁴  Ainur Zhussupbekova⁴  Kuanysh Zhussupbekov⁴ 

[1] Core Facilities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;Department of Chemical Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan;Department of Chemistry, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;School of Physics and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin, Ireland;

关键词: transparent thin film;    titanium oxide;    europium (III) doping;    security labeling;    UV screening;   

DOI  :  10.3390/nano10061132

来源: DOAJ

【 摘 要 】

Transparent titanium oxide thin films attract enormous attention from the scientific community because of their prominent properties, such as low-cost, chemical stability, and optical transparency in the visible region. In this study, we developed an easy and scalable solution-based process for the deposition of transparent TiOx thin films on glass substrates. We showed that the proposed method is also suitable for the fabrication of metal-doped TiOx thin films. As proof-of-the-concept, europium Eu(III) ions were introduced into TiOx film. A photoluminescence (PL) study revealed that Eu-doped TiOx thin films showed strong red luminescence associated with ⁵D₀→⁷F_j relaxation transitions in Eu (III). We found that prepared TiOx thin films significantly reduce the transmittance of destructive UV radiation; a feature that can be useful for the protection of photovoltaic devices. In addition, transparent and luminescent TiOx thin films can be utilized for potential security labeling.

【 授权许可】

Unknown