Notes on thermometric artefacts by Er3+ luminescence band interference

Rühl, Philipp; Wang, Dongni; Garwe, Frank; Müller, Robert; Haase, Markus; Krämer, Karl W.; Paa, Wolfgang; Heintzmann, Rainer; Heinemann, Stefan H.; Stafast, Herbert (2021). Notes on thermometric artefacts by Er3+ luminescence band interference. Journal of luminescence, 232, p. 117860. Elsevier 10.1016/j.jlumin.2020.117860

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Optical thermometry based on the intensity ratio of the 2H11/2 → 4I15/2 (525 nm) and 4S3/2 → 4I15/2 (545 nm) emission of Er3+ provides a powerful tool for microscale temperature sensing. Crystalline β-NaYF4:Er,Yb is an excellent thermometry material for green upconversion emission upon NIR laser excitation. However, interfering 2H9/2 → 4I13/2 emission is observed around 555 nm for continuous-wave laser excitation intensities above 10 W/cm2. In this study, the green Er3+ emission bands are characterized and it is demonstrated how the true sample temperature is determined circumventing possible artefacts.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Krämer, Karl

Subjects:

500 Science > 530 Physics
500 Science > 540 Chemistry

ISSN:

0022-2313

Publisher:

Elsevier

Language:

English

Submitter:

Karl Krämer

Date Deposited:

23 Jun 2021 19:19

Last Modified:

27 Jun 2021 03:08

Publisher DOI:

10.1016/j.jlumin.2020.117860

BORIS DOI:

10.48350/156924

URI:

https://boris.unibe.ch/id/eprint/156924

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