A process for forming a zinc oxide film including immersing an electroconductive substrate having a surface including a plurality of linear projections in an aqueous solution containing at least nitrate ions and zinc ions to form a zinc oxide film on {HEAD ~ the electroconductive substrate} by {TAIL ~ a liquid phase deposition} 
A process for forming a zinc oxide film including immersing an electroconductive substrate having a surface including a plurality of linear projections in an aqueous solution containing at least nitrate ions and zinc ions to form a zinc oxide film on { HEAD ~ the electroconductive substrate } by { TAIL ~ a liquid phase deposition }
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