Three- and Two-Photon NIR-to-Vis (Yb,Er) Upconversion from ALD/MLD-Fabricated Molecular Hybrid Thin Films
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2018-03-14
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en
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8
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ACS Applied Materials and Interfaces, Volume 10, issue 10, pp. 8845-8852
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