Zinc oxide (ZnO) was synthesized by chemical bath deposition (CBD) technique at room temperature. The species distribution diagrams, and the solubility curves were used for determining the better chemical conditions required to evaluate the ammonia role for obtaining high quality ZnO films. ZnSO 4 , NH 4 NO 3 , and KOH were the chemical reagents used for the bath. Three different pH zones between 9 and 13 were selected to synthesize the films. X-ray diffraction analysis showed that the pH value of the chemical bath and the ammonia concentration influences on the structure crystalline of the deposited films. Three different surface morphologies were obtained according to the pH of the solution. The bandgap energy values measured in the deposited films range from 3.52 eV to 3.77 eV. The estimated Urbach’s tails energy values confirmed that samples exhibited high crystallinity. By controlling the ammonia concentration and pH, deposition of high quality Zn...

中文翻译：

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氨在常温下沉积ZnO薄膜生长机理的作用

在室温下通过化学浴沉积（CBD）技术合成了氧化锌（ZnO）。物种分布图和溶解度曲线用于确定评估氨在获得高质量ZnO薄膜中的作用所需的更好的化学条件。ZnSO 4，NH 4 NO 3和KOH是用于镀液的化学试剂。选择9和13之间的三个不同的pH区域来合成薄膜。X射线衍射分析表明，化学浴的pH值和氨浓度对沉积膜的结构结晶有影响。根据溶液的pH值获得了三种不同的表面形态。在沉积膜中测得的带隙能量值范围为3.52 eV至3.77 eV。估计的Urbach尾巴能量值证实样品显示出高结晶度。通过控制氨的浓度和pH值，可以沉积高质量的Zn。