Transparent Zinc Oxide Films Chemically Prepared from Aqueous Solution

Abstract

Transparent zinc oxide (ZnO) films had been chemically deposited on nonconductive glass from aqueous solutions containing zinc nitrate and dimethylamine‐borane (DMAB) kept at 323 K. The ZnO films had a wurtzite structure and exhibited an optical bandgap energy of 3.3 eV which is characteristic of ZnO. A 0.2 μm thick ZnO film with an optical transmittance of 80% was deposited by immersion for approximately 20 min in an aqueous solution containing 0.05 mol/liter zinc nitrate and 0.05 to 0.1 mol/liter DMAB.