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The Prospects Of Zinc Oxide (ZnO) For Window Layer Cigs Solar Cells

Table 1:

Column Heading n-ZnO n-CdS p-CIGS
Layer thickness( µm ) 0.1-0.5 0.05 3.0
Dielectric constant, εr 9.0 10.0 9.4
Electron mobility µn ( cm2/Vs ) 100 100 100
Hole mobility, µp ( cm2/Vs ) 25 25 25
Defect density (cm-3) 2 x 1016 2 x 1016 2 x 1016
Electron and hole concentration, n, p (cm-3) 1 x 1020 1 x 1020 2 x 108
Density of states at conduction band, Nc (cm-3) 2.2×1018 1.8×1019 7.5×1017
Density of states at valence band, Nv (cm-3) 1.8×1019 2.4×1018 1.8×1018
Electron affinity, Xe (eV) 4.50 4.2 4.5
Energi gap, Eg (eV) 3.1-3.4 2.4 1.5
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