Researchers are paying more attention to thin film materials because of the rising demand in the electronics industry. This demand is due to the cost-effective preparation method as well as the tunable room temperature synthesis. In this research, sol–gel dip-coating was used to synthesize K-doped TiO₂ thin films on glass substrates at varying concentrations of K-precursor (2,4,6,8,10 at. wt.%). Highly ordered thin films were produced by optimizing the deposition conditions. K has an impact on the morphological, structural, magnetic, dielectric, antibacterial, and optical characteristics of TiO₂ films. XRD was used to confirm the development of the anatase phase and with the increase in K contents, the crystallite size was decreased. As K concentration rises, the band gap of the films decreases from 3.89 to 3.04 eV. A shift in optical absorption from UV to visible light and an increase in film thickness both contributed to the band gap lowering. Due to reduced band gap, these films can absorb a lot of the range of visible portions of the electromagnetic spectrum making them suitable for absorbing layers of solar cells. Dielectric properties that followed the Maxwell-Wagner model and Koop's theory are explained by the hopping process. The dielectric constant decreases with the increase in K-concentration may be due to the agglomeration of TiO₂ into larger particles with reduced surface area. Although titania has more effective antibacterial activity but K doped TiO₂ is found to be more effective against P. aoeruginosa than other bacteria. All K-doped TiO₂ thin films exhibit ferromagnetism. K-doped TiO₂ films are responsible for the improving applications of sensors, photovoltaic cells, and water splits.

由于电子行业需求的增加，研究人员越来越关注薄膜材料。这种需求是由于 具有成本效益的制备方法以及可调 室温合成。在这项研究中，溶胶-凝胶浸涂用于在不同浓度的 K 前体（2、4、6、8、10 at. wt.%）下在玻璃基板上合成 K 掺杂的 TiO _2薄膜。 通过优化沉积条件制备了高度有序的薄膜。_{K对TiO 2}薄膜的形态、结构、磁性、介电、抗菌和光学特性有影响。XRD 用于确认锐钛矿相的发展，并且随着 K 含量的增加，微晶尺寸减小。问 浓度升高，薄膜的带隙 从 3.89 减小到 3.04 eV。光吸收从紫外线到可见光的转变以及薄膜厚度的增加都导致带隙降低。由于带隙减小，这些薄膜可以吸收电磁波谱的大部分可见部分，使其适用于太阳能电池的吸收层。遵循 Maxwell-Wagner 模型和 Koop 理论的介电特性可以通过跳跃过程来解释。介电常数随着 K 浓度的增加而降低，这可能是由于 TiO ₂附聚成具有减小的表面积的较大颗粒。虽然二氧化钛具有更有效的抗菌活性，但 K 掺杂的 TiO ₂ 被发现比其他细菌对铜绿假单胞菌更有效。所有 K 掺杂的 TiO ₂薄膜都表现出铁磁性。K 掺杂的 TiO ₂薄膜负责改进传感器、光伏电池和水分解的应用。