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Table 1 The variation of bandgap energy and Urbach’s energy of ZnO thin films

From: Structural, Optical and Electrical Properties of Zinc Oxide Layers Produced by Pulsed Laser Deposition Method

Sample T s, °C E g , eV E u , eV Sample (anneal) E g , eV E u , eV
PLD 20 3.30 0.14 PLD an 3.58 0.27
PLD-200 200 3.79 0.36 PLD-200 an 3.87 0.32
PLD-300 300 4.08 0.18 PLD-300 an 3.83 0.12
PLD-400 400 4.19 0.28 PLD-400 an 3.98 0.28