Effect of AZO Substrates on Self-Seeded Electrochemical Growth of Vertically Aligned ZnO Nanorod Arrays and Their Optical Properties

Figure 4

SEM images of electrochemically deposited ZnO NRAs (−1.0 V, 4 h, 85°C) on AZO layers with varied thickness: (a) AZO₅₀₀ (𝑑= 65 nm, 𝑙= 1.1 μm, AR = 17); (b) AZO₂₅₀ (𝑑= 51 nm, 𝑙= 1.3 μm, AR = 25); (c) AZO₁₀₀ (𝑑= 36 nm, 𝑙= 1.8 μm, AR = 50); (d) AZO₅₀ (𝑑= 30 nm, 𝑙= 2.5 μm, AR = 83).

(a)

(b)

(c)

(d)