Optical investigation of Er3+ and Er3+/Yb3+ doped zinc-tellurite glass for solid-state lighting and optical thermometry

Sevcan Tabanli*, Gonul Eryurek

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56 Atıf (Scopus)

Özet

Er3+ and Er3+/Yb3+ doped zinc tellurite (ZnO/TeO2) glasses were prepared using melt quenching technique. Spectroscopic properties of the glasses were studied by absorption spectroscopy, luminescence spectroscopy, and color chromaticity coordinates (CIE-1931) measurements. Upconverted-emission intensities and the CIE-1931 coordinates were strongly affected by the presence of Yb3+ ion, as well as the excitation power density of 975 nm laser light. Effect of temperature on green upconverted-emissions from two thermally coupled 2H11/2 and 4S3/2 levels of Er3+ ions were measured and fluorescence intensity ratio technique was applied to investigate the temperature sensing properties. High sensitivity and short response time properties make ZnO/TeO2 glasses a very good candidate for non-contact optical temperature sensor applications. The maximum sensitivity of the glasses doped with Er3+ and Er3+/Yb3+ were found to be 72 × 10−4 K-1 and 120 × 10−4 K−1 at 429 K, respectively which are much higher than previously reported temperature sensors based on Er3+ ion doped materials. Hence, Er3+/Yb3+ doped zinc-tellurite glass can be more suitable than that of doped with Er3+ ions only for color tunable solid-state lighting and non-contact optical thermometry applications.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)448-455
Sayfa sayısı8
DergiSensors and Actuators A: Physical
Hacim285
DOI'lar
Yayın durumuYayınlandı - 1 Oca 2019

Bibliyografik not

Publisher Copyright:
© 2018 Elsevier B.V.

Finansman

The authors thank the Res. Assist. Hasan Tabanli for assistance in obtaining the thermal measurements. Sevcan Tabanli also thanks to The Scientific and Technological Research Council of Turkey for granting scholarship (TUBITAK, 2211C ).

FinansörlerFinansör numarası
TUBITAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu2211C

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