Table 1 The values of cell parameters from XRD, crystallite size, strain for ZnO:Er deposited on sapphire and silicon substrate.
Sample specification | Cell parameters (Å) | c/a | Unit cell volume (Å3) | Crystallite size (t= 0.89λ/ βcosθ) (nm) | Strain (ε=βcosθ/4sinθ) |
|---|---|---|---|---|---|
ZnO:Er on sapphire substrate | a = 3.271 ±0.0002 c = 5.132 ±0.0002 | 1.56 | 47.57±0.006 | 105 nm | 1.06 × 10−3 |
ZnO:Er on silicon substrate | a = 3.270 ±0.001 c = 5.239 ±0.0004 | 1.60 | 48.55±0.005 | 93 nm | 5.4 × 10−4 |
