Table 3 Cut off wavelength, band gap energy of Sr2–xCaxNiWO6 (x = 0.00, 0.02, 0.04, 0.06) series calculated from Kubelka Munk plot and band gap energy obtained from Tauc plot.

From: Role of Ca2+ doping on the enhancement of dielectric properties of Sr2–xCaxNiWO6 for energy storage device application

Doping content (x)

0.00

0.02

0.04

0.06

Cut-off wavelength (nm)

389

400

398

397

Band gap energy, Eg (eV) from cut-off wavelength

3.19

3.10

3.11

3.12

Band gap energy (eV) obtained from tauc plot

3.17

3.11

3.12

3.13

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