Three- and Two-Photon NIR-to-Vis (Yb,Er) Upconversion from ALD/MLD-Fabricated Molecular Hybrid Thin Films
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2018-03-14
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Mcode
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Language
en
Pages
8
8845-8852
8845-8852
Series
ACS Applied Materials and Interfaces, Volume 10, issue 10
Abstract
We report blue, green, and red upconversion emissions with strongly angular-dependent intensities for a new type of hybrid (Y,Yb,Er)-pyrazine thin films realized using the atomic/molecular layer deposition thin-film fabrication technology. The luminescence emissions in our amorphous (Y,Yb,Er)-pyrazine thin films of a controllable nanothickness originate from three- and two-photon NIR-to-vis excitation processes. In addition to shielding the lanthanide ions from nonradiative de-excitation, the network of interconnected organic molecules serves as an excellent matrix for the Yb3+-to-Er3+ excitation energy transfer. This suggests a new approach to achieve efficient upconverting molecular materials with the potential to be used for next-generation medical diagnostics, waveguides, and surface-sensitive detectors.Description
| openaire: EC/H2020/339478/EU//LAYERENG-HYBMAT
Keywords
atomic/molecular layer deposition, inorganic-organic hybrids, thin films, upconversion luminescence
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Citation
Giedraityte , Z , Tuomisto , M , Lastusaari , M & Karppinen , M 2018 , ' Three- and Two-Photon NIR-to-Vis (Yb,Er) Upconversion from ALD/MLD-Fabricated Molecular Hybrid Thin Films ' , ACS Applied Materials and Interfaces , vol. 10 , no. 10 , pp. 8845-8852 . https://doi.org/10.1021/acsami.7b19303