Enhanced thermoluminescence intensity, stability, and sensitivity of the Yb3+ doped BaO–ZnO–LiF–B2O3 glass by Sm3+ co-doping

Nimitha S. Prabhu, K. Sharmila, H. M. Somashekarappa, Hanan Al-Ghamdi, Aljawhara H. Almuqrin, M. I. Sayyed, Sudha D. Kamath

Research output: Contribution to journalArticlepeer-review


We report for the first time the Thermoluminescence (TL) enhancement of intensity, stability, and sensitivity of a novel Yb3+ doped BaO–ZnO–LiF–B2O3 glass host by Sm3+ co-doping. The optimum co-doping of Sm3+ ions to the Yb3+ optimum doped glass intensified the TL counts by 6 times and that of the undoped glass by 157 times. This was reasoned to the increment in the trap density. The kinetic parameters signified the restructuring role of Sm3+ ions by creating deeper traps with higher lifetimes and activation energies. This was beneficial in enhancing the stability of the Yb3+ doped glass by minimizing the thermal fading after a week from 42% to 10%. The co-doping also enhanced the sensitivity and lowered the threshold dose. The results present the perspective of Sm3+ ions as TL activators. The TL dosimeter characteristics of the co-doped glass were favorable for its potential application in γ-environment (0.25–1 kGy) and food irradiation.

Original languageEnglish
Article number124906
JournalMaterials Chemistry and Physics
Publication statusPublished - 01-10-2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics


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