Single-step approach to sensitized luminescence through bulk-embedded organics in crystalline fluorides

0539010 - FZÚ 2021 RIV GB eng J - Journal Article
Hansen, P.-A. - Zikmund, Tomáš - Yu, T. - Kvalvik, J.N. - Aarholt, T. - Prytz, O. - Meijerink, A. - Nilsen, O.
Single-step approach to sensitized luminescence through bulk-embedded organics in crystalline fluorides.
Communications Chemistry. Roč. 3, č. 1 (2020), s. 1-10, č. článku 162. ISSN 2399-3669. E-ISSN 2399-3669
R&D Projects: GA ČR GA16-22092S
Institutional support: RVO:68378271
Keywords : atomic layer deposition * thin-films * up-conversion * ALD * photoluminescence * TiF₄ * Pr * Tb * Eu * Dy
OECD category: Nano-materials (production and properties)
Impact factor: 6.581, year: 2020
Method of publishing: Open access

Luminescent materials enable warm white LEDs, molecular tagging, enhanced optoelectronics and can improve energy harvesting. With the recent development of multi-step processes like down- and upconversion and the difficulty in sensitizing these, it is clear that optimizing all properties simultaneously is not possible within a single material class. In this work, we have utilized the layer-by-layer approach of atomic layer deposition to combine broad absorption from an aromatic molecule with the high emission yields of crystalline multi-layer lanthanide fluorides in a single-step nanocomposite process. This approach results in complete energy transfer from the organic molecule while providing inorganic fluoride-like lanthanide luminescence. Sm3+ is easily quenched by organic sensitizers, but in our case we obtain strong fluoride-like Sm3+ emission sensitized by strong UV absorption of terephthalic acid.
Permanent Link: http://hdl.handle.net/11104/0316748