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.

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

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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