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Table 2 Band gap

From: Effect of concentration, aging, and annealing on sol gel ZnO and Al-doped ZnO thin films

Concentration (Mol)

Age time (hours)

Band gap (eV) dT/dλ method

Band gap (eV) Tauc method

R2

∆ (eV)

0.2

24

3.40

3.36

0.995772

0.04

0.2

48

3.40

3.38

0.995986

0.02

0.2

72

3.28

3.27

0.998545

0.01

0.4

24

3.36

3.38

0.997285

0.02

0.4

48

3.36

3.27

0.992703

0.02

0.4

72

3.27

3.28

0.998453

0.01

0.6

24

3.35

3.38

0.999094

0.03

0.6

48

3.29

3.38

0.997849

0.09

0.6

72

3.24

--

--

--

0.8

24

3.37

3.37

0.997265

0.00

0.8

48

3.35

3.35

0.99553

0.00

0.8

72

3.45

--

--

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