Upconversion luminescence and temperature sensing characteristics of Ho3+/Yb3+ co-doped tellurite glasses

Anıl Doğan, Murat Erdem*, Kadir Esmer, Gönül Eryürek

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19 Atıf (Scopus)

Özet

The upconversion emission spectra of Yb3+/Ho3+co-doped TeO2-ZnO-BaO glasses were studied for solid-state lighting and optical thermometry. The studied glasses were prepared using the melt quenching technique. The green and red UC emissions of Ho3+ions are due to two-photon absorptions, which cause the various energy transfer processes. The studied glasses show tunable color properties and high-temperature sensor sensitivity. Color coordinates on the CIE chromaticity diagram of those were affected by the pump power and shifted from green to red region at higher Ho3+concentrations. The 5F5 level and (3F4,5S2) levels of Ho3+ are found to be thermally coupled levels. The energy difference (ΔE) between these levels is calculated as 2463.66 cm−1. Among the studied glasses, Yb3+(3.0 mol%)/Ho3+(0.15 mol %) co-doped TeO2-ZnO-BaO show the highest absolute sensitivity of 0.011K−1 at 503K. In the light of conducted observations, the studied glasses are proposed as a good candidate material for lighting and optical temperature sensing.

Orijinal dilİngilizce
Makale numarası121055
DergiJournal of Non-Crystalline Solids
Hacim571
DOI'lar
Yayın durumuYayınlandı - 1 Kas 2021

Bibliyografik not

Publisher Copyright:
© 2021 Elsevier B.V.

Finansman

Marmara University, Scientific Research Projects Unit (BAPKO) financially supported this study with the FEN-C-YLP-141118-0600 grant number.

FinansörlerFinansör numarası
Marmara ÜniversitesiFEN-C-YLP-141118-0600

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