We performed the optimization of conditions in chemical bath deposition using the design of experimental methodology. Factorial design (2$^{3})$ was used for finding the optimal conditions of preparing vanadium(V) oxide xerogel thin films with better electrochromic properties suitable for electrochemical applications. The thin films were prepared by acidification of NH$_{4}$VO$_{3}$ aqueous solution with chemical bath deposition. The factors and selected values we considered were as follows: the deposition time (10 and 20 min), the deposition temperature (70 and 80 $^{circ}$C), and the mass of ammonium metavanadate (0.3 and 0.5 g). UV-vis spectrometry was used for recording the transmittance variance, $Delta T$, as the property of interest for modeling in this work. Increasing the deposition temperature and time values led to an increase in the value of $Delta T $ at 800 nm wavelength, but the mass of NH$_{4}$VO$_{3}$ showed the opposite effect. Modeling performed using a 2$^{3}$ factorial design showed that the concentration of the ammonium metavanadate was the single most important factor.
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机译：我们使用实验方法的设计对化学浴沉积条件进行了优化。析因设计（2 $ ^ {3}）$用于寻找制备具有更好的电致变色特性的钒（V）氧化物干凝胶薄膜的最佳条件，适用于电化学应用。通过用化学浴沉积酸化NH 3 _ {4} $ VO 3 _ {3} $水溶液来制备薄膜。我们考虑的因素和选择的值如下：沉积时间（10和20分钟），沉积温度（70和80 $ ^ {circ} $ C）以及偏钒酸铵的质量（0.3和0.5 g） 。紫外可见分光光度法用于记录透射率方差$ Delta T $，作为此工作中建模的目标属性。沉积温度和时间值的增加导致在800 nm波长下$ Delta T $的值增加，但是NH $ _ {4} $ VO $ _ {3} $的质量显示相反的效果。使用2 ^ {3} $析因设计进行的建模表明，偏钒酸铵的浓度是唯一最重要的因素。
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