论文标题
使用电化学阻抗光谱范围来消除掺杂剂在电荷载体动力学上的作用
Raveling the Role of Dopants on Charge Carrier Kinetics of TiO$_2$ Electrodes using Electrochemical Impedance Spectroscopy
论文作者
论文摘要
我们通过自旋涂层合成了纯和共掺杂的二氧化钛（Tio $ _2 $）电极。我们研究了与过渡金属和非金属共同掺杂的准备薄膜电极的光学和电子性能。 Cu，Zn和N的共掺杂增加了可见区域中辐射的吸收。掺杂导致电极中缺陷状态的形成。在本文中，我们研究了原始和掺杂的TiO2电极中的载体动力学。为了研究掺杂剂在基于TIO2电极的载体运输中的作用，电化学阻抗光谱测量的频率范围为10-1 Hz至106 Hz。该研究揭示了掺杂剂对存在的缺陷位点中电子孔重组的影响，电子和离子的传输机理对电极的表面/界面的影响。
We synthesized the pure and co-doped titanium dioxide (TiO$_2$) electrodes via spin coating. We examined the optical and electronic properties of as-prepared thin film electrodes with co-doping of transition metals and non-metals. The co-doping of Cu, Zn, and N increase the absorption of the radiation in the visible region. The doping leads to the formation of defect states in the electrodes. In this article, we have studied the carrier kinetics in pristine and co-doped TiO2 electrodes. To study the role of dopants in carrier transport of the synthesized TiO2 based electrodes, the electrochemical impedance spectroscopy measurement is performed in the frequency range of 10-1 Hz to 106 Hz. The study reveals the influence of dopants on electron-hole recombination in the defect sites present in bulk and the transport mechanism of the electrons and ions to the surface/interface of the electrodes.
