Bejjipurapu Chandrasekhar¹, Gunnam Nagarjuna², Sopinti Ramesh¹, Darsi Rajeswara Rao³, B.V. Raghavaiah^4
1Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, 522510, Andhra Pradesh, India
²Department of Chemistry, S.R.R. & C.V.R. Government Degree College (A), Vijayawada, 520004, Krishna District, Andhra Pradesh, India
³Department of Physics, Government Junior College, Tiruvuru, 521235, Krishna District, Andhra Pradesh, India
⁴Department of Physics, RGUKT - Ongole Campus, Rajiv Gandhi University of Knowledge Technologies-AP,Ongole, 523001, Andhra Pradesh, India

Abstract. A glass composition ZnO-Bi₂O₃-B₂O₃:TiO₂ is selected, and samples were made using melt and quench method. Initial characterization tests like X-ray diffraction and scanning electron microscopy are carried out to assess the solid-state behavior of samples. After fundamental characterization, samples were tested for optical absorption and emission spectral properties. The diffraction patterns and scanning images validate glassy behavior. The experimental density and Ti ion concentrations found to increase with the introduction of TiO₂ while average molecular weight has shown decreasing trend. The absorption spectra have exhibited the two relevant absorption bands of titanium ions in the range about 510 to 550 nm and 680 to 700 nm. Emission spectra of all samples have confirmed that a wide band from 400 to 540 nm is seen and the test sample with low amount of TiO₂ has shown evidence of highest peak intensity in comparison with remaining samples. The reasons for spectral variations by mean of oxidation states and occupational locations of Ti were explored in detail.

doi: https://doi.org/10.55318/bgjp.2023.50.3.225

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