Tuning the nonlinear susceptibility and linear parameters upon annealing Ag_60−xSe₄₀Te_xnanostructured films for nonlinear and photonic applications

Abstract

The current report is focused on the annealing-induced changes in structural, non-linear/linear optical, and surface morphological changes of the nanostructured Ag60-xSe40Tex (x=0,5,10,15 %) films. The increase in crystallinity with annealing...

Influence of time dependent laser-irradiation for tuning the linear–nonlinear optical response of quaternary Ag10In15S15Se60 films for optoelectronic applications

“…36 αhν = B ( hν − E g ) m here the constant ‘ B ’ is dependent on the transition probability, ‘ m ’ is an index that have different values depending on the type of electronic transition that causes absorption. 37 Here the direct optical bandgap is evaluated, as the Ag 10 In 15 S 15 Se 60 thin films showed the crystalline nature. The graph of ( αhν ) 2 versus hν is shown in Fig.…”

Temperature dependent Raman and photoresponse studies of Bi2Te3 thin films annealed at different temperatures for improved optoelectronic performance

“…the reciprocal of α . 50 The change in ‘ δ ’ as a function of energy is presented in Fig. 8(a), which shows the reduction of δ with hν .…”

Enhanced Photoresponse and Surface Wettability of Bi2Se3 Film with Annealing at Different Temperatures for Optoelectronic Applications

“…It is observed that the absorption onset for the optical spectra is red-shifted toward higher wavelengths, thus indicating the decrease in the bandgap energy value (Figure a). The absorption ability is characterized by the absorption coefficient (α), which is obtained from the primary transmission ( T ) and using the thickness of film ( d ) from the formula: α = 1 d ⁡ log ⁡ true( 1 T true) …”