Publications

Up-converting ALD/MLD thin films with Yb3+, Er3+ in amorphous organic framework

Tuomisto, M. and Giedraityte, Z. and Mai, L. and Devi, A. and Boiko, V. and Grzeszkiewicz, K. and Hreniak, D. and Karppinen, M. and Lastusaari, M.

JOURNAL OF LUMINESCENCE
Volume: 213 Pages: 310-315
DOI: 10.1016/j.jlumin.2019.05.028
Published: 2019

Abstract
Near-infrared to green and red up-conversion is reported for a new type of hybrid (Yb,Er)-IR-806 films prepared using the atomic/molecular layer deposition (ALD/MLD)thin-film fabrication technology. These amorphous films can be realized in controllable nanothicknesses and they show an exceptionally wide absorption band in the near-infrared region. The films exhibit a highly local up-conversion excitation process, which suggests strong potential for use as e.g. temperature sensors with Ångström scale surface resolution. © 2019

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