ZnO thin film with high 001 orientation was electrosynthesised on ITO-coated glass substrate at room temperature under pulsed voltage. Photoluminescence (PL) shows two obvious peaks: violet band and strong green band. The former is due to the free-excitonic transition and the latter is believed to arise from the single ionized oxygen vacancy (V_o⁺). Raman scattering reveals that the 580 cm^-1 mode and the shoulder peak mode at 550 cm^-1 originate from the N-related local vibration mode (LVM) and E₁ (LO) mode, respectively.

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