Tunable luminescence and nonlinear optical properties of nano colloidal Ge20Te75Bi5 chalcogenide glass

Gadhwal, Reena; Singh, Hukum; Devi, Ambika; Kumar, Kapil

doi:10.1016/j.optlastec.2022.108665

Cited by 9 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The n 2 values have been estimated for two nano-colloidal solution samples using the above relation and have been depicted in Table 2. Theoretically calculated nonlinear refractive index values show an increase in nonlinear refractive index values with increasing nanocolloidal concentration as is reported in experimental results 15 .…”

Section: Wheresupporting

confidence: 77%

“…The optical bandgap of nanocolloidal sample (shown in Table 1) has been calculated from the optical absorption coefficient data using the equation 14 (1) where B is the band tail parameter, which is the slope of the Tauc edge. The band gap (as shown in Figure 2) significantly shifts to red when the concentration of nano colloids rises 15 Transmission spectra can be used to determine refractive index using the well-known Swanepoel method 16 (2)…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical Investigation on Linear and Nonlinear Optical Properties of Solution-Processed GeTeBi Chalcogenide Films

2023

ijcih

View full text Add to dashboard Cite

The optical study of Ge 20 Te 75 Bi 5 nano colloids is presented in this paper. Bulk chalcogenide glass was prepared by the well-known melt quenching method. Solution-based processing is proposed for nano colloid formation. Using the spin coating technique, optical-grade thin films are deposited on glass slides. The optical bandgap of films is estimated from absorbance spectra using the Tauc extrapolation method and Wemple and DiDomenico (WDD) model is used to determine the optical dispersion parameters. Tichy and Ticha approach has been employed to observe nonlinear refractive index (n 2 ). An increase in optical parameters and a decrease in optical bandgap with the increase in glass concentration may be attributed to cluster formation while dissolution.

show abstract

Section: Wheresupporting

confidence: 77%