Color Tuning and Optical Temperature Sensing Properties of Upconversion Emission in Yb3+/Er3+/Tm3+Doped Boro-Zinctellurite Glasses

Gonul Eryurek*, Sevcan Tabanli, Thami Buhari, Murat Erdem

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Özet

Zinc borotellurite (B2O3/BaO/ZnO/TeO2) glasses co-doped with Tm3+/Yb3+, Er3+/Yb3+ and tri-doped Tm3+/Er3+/Yb3+ were prepared using the traditional melt quenching method. Optical absorption spectra were measured in the wavelength range of 350 nm-1100 nm at room temperature. The optical bandgap (Eg) and Urbach energy were calculated from Tauc’s plot. Blue and green emissions that can be seen by the naked eye were generated under 975 nm laser light excitation in doped Tm3+/Yb3+ and Er3+/Yb3+ doped glasses. Shifts in both blue and green color coordinates were seen as the excitation power density increased from 0.5 to 15.1 W cm−2. A white light generation was generated in glass doped with Tm3+/Er3+/Yb3+ ions, although a noticeable shift was not observed in both blue and green color coordinates for the same excitation power density range. Temperature sensing properties were investigated using the fluorescence intensity ratio of upconversion green emissions from the two thermally coupled 2H11/2 and 4S3/2 levels of Er3+ ions between 304 K and 443 K. The maximum sensitivity of the glasses doped with Er3+ and Er3+/Yb3+ were found to be 7.2 × 10−3K−1 and 1.2 × 10−2K−1 at 429 K, respectively.

Orijinal dilİngilizce
Makale numarası076005
DergiECS Journal of Solid State Science and Technology
Hacim12
Basın numarası7
DOI'lar
Yayın durumuYayınlandı - Tem 2023

Bibliyografik not

Publisher Copyright:
© 2023 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited.

Finansman

One of the authors, G. (Ozen) Eryürek who was one of his graduate students, wishes to express her warm and sincere thanks to Prof. Baldassare Di Bartolo for giving her a chance to study in USA, his continuous support and friendship throughout the years passed. The authors, S. Tabanli and M. Erdem thank to Prof. B. Di Bartolo for inviting them to his spectroscopy laboratory at Boston College (USA) as visiting scientist. This research was supported by the Scientific and Technological Research Unit (BAP) of Istanbul Technical University with Project number 40673.

FinansörlerFinansör numarası
Scientific and Technological Research Unit
Istanbul Teknik Üniversitesi40673

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