1：Experimental Design and Method Selection:

The study used electrodeposition to synthesize ZnO films on platinum substrates, with optimization of growth conditions such as precursor concentration, electrochemical potential, and solution temperature. A vertical Schottky diode configuration was employed as a test vehicle to characterize material properties.

2：Sample Selection and Data Sources:

ZnO films were electrodeposited on platinum substrates prepared by evaporation. The electrolytic solution consisted of 100 mM zinc nitrate hexahydrate in deionized water.

3：List of Experimental Equipment and Materials:

Equipment included a CHI660E electrochemical workstation, Ag/AgCl reference electrode, sputtered Pt film counter electrode, and ultrasonicator for substrate cleaning. Materials included zinc nitrate hexahydrate (99%, Sigma-Aldrich), acetone, methanol, and deionized water.

4：Experimental Procedures and Operational Workflow:

Substrates were ultrasonically rinsed in acetone and methanol, blow-dried, and electrodeposited in potentiostatic mode using a three-electrode cell. One-step deposition at -800 mV for 20 min or two-step deposition at -1120 mV for 10 s followed by -800 mV for 20 min was performed at 70 ± 2 °C with moderate stirring. Schottky diodes were fabricated with circular top contacts of 50 μm radius.

5：Data Analysis Methods:

I-V and C-V measurements were conducted at room temperature to extract parameters such as ideality factor, reverse saturation current, carrier concentration, and breakdown voltage using thermionic emission and Mott-Schottky theories.