An insight into the co-doping effect of d-d transitions of transition metal ions and hypersensitivity of rare-earth ions in multicomponent glass-system

Abstract

A multicomponent glass system with composition (70B₂O₃-22.5Bi₂O₃-5SeO₂-2CuO-0.5Sm₂O₃) was synthesized via the conventional melt-quench technique. X-ray diffraction analysis confirmed the amorphous nature of this glass. The co-doping of transition and rare-earth metal ions results in the gradual decrease in glass transition temperature and improvement in thermal stability as observed from differential scanning calorimetry. The addition of CuO has increased non-bridging oxygens in multicomponent glass system. The increase in non-bridging oxygens results in a decrease in the optical band gap energy of the glass. Various results reveal that the hypersensitive nature of rare-earth ions has been suppressed by the d-d transition. A decrease in the energy band gap upon co-doping of transition and rare earth ions, suggests its applications in the fields of optoelectronics.

Keywords:

• Differential scanning calorimetry
• FTIR and Raman spectroscopy
• glass

Acknowledgments

One of the authors is thankful to the A.C. Patil College of Engineering, Kharghar, Navi Mumbai, for providing the necessary facilities to carry out this work.

Author contributions

Seema Thakur: investigation, characterization, methodology, writing-original draft. Vanita Thakur: conceptualization, methodology, editing, writing–review and editing. Rabiu Abubakar: characterization, methodology.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

Data is available within the article.