A process for forming a zinc oxide film including immersing {TAIL ~ 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 the electroconductive substrate by {HEAD ~ a liquid phase deposition} 
A process for forming a zinc oxide film including immersing { TAIL ~ 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 the electroconductive substrate by { HEAD ~ a liquid phase deposition }
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