Calcium (Ca) and lanthanum (La) doping into mesoporous TiO₂ prevents nucleation and growth of particles during synthesis and calcination at high temperature, resulting in smaller particle sizes and a decrease in the band gap of TiO₂. These collectively have a positive affect on the efficiency of dye-sensitized solar cells (DSSCs) when employed as the anode. When designing an effective DSSC anode, the efficiency of dye adsorption must also be considered. This work investigates the adsorption properties of N719 dye onto La and Ca doped mesoporous TiO₂ anodes for DSSCs. Near edge X-ray absorption fine structure spectroscopy (NEXAFS) identified the presence of La and Ca dopants in the TiO₂ nanoparticles. Performance of DSSCs with Ca and La doped mesoporous TiO₂ anodes demonstrated that doping of TiO₂ enhances the overall efficiency of the devices. Both doped TiO₂ nanoparticles showed higher dye adsorption concentration than that of pure TiO₂, as shown in Brunauer-Emmett-Teller (BET) characterization. By employing Langmuir and Freundlich isotherms, dye adsorption behaviour was modelled. Pure and Ca doped TiO₂ demonstrated good correlation to both isotherms, whereas La doped TiO₂ only showed good correlation with Langmuir isotherm. Irrespective of its single layer adsorption kinetics, 0.1 mol.% La doped TiO₂ has shown the highest dye adsorption and efficiency due to increase in surface area and oxygen vacancies induced by La doping.

钙（Ca）和镧（La）掺杂到介孔二氧化钛₂防止成核和颗粒的生长在合成和煅烧在高温期间，导致更小的颗粒尺寸和在TiO 2的带隙的降低₂。当用作阳极时，这些共同对染料敏化太阳能电池 (DSSC) 的效率产生积极影响。在设计有效的 DSSC 阳极时，还必须考虑染料吸附效率。这项工作研究了 N719 染料在用于DSSC 的 La 和 Ca 掺杂介孔 TiO ₂阳极上的吸附性能。近边 X 射线吸收精细结构光谱 (NEXAFS) 确定了 TiO _{2 中}存在 La 和 Ca 掺杂剂纳米粒子。具有 Ca 和 La 掺杂介孔 TiO ₂阳极的 DSSC 的性能表明，TiO _{2 的}掺杂提高了器件的整体效率。两种掺杂的 TiO ₂纳米颗粒都显示出比纯 TiO ₂更高的染料吸附浓度，如 Brunauer-Emmett-Teller (BET) 表征所示。通过使用 Langmuir 和 Freundlich 等温线，对染料吸附行为进行建模。纯的和 Ca 掺杂的 TiO ₂显示出与两条等温线的良好相关性，而 La 掺杂的 TiO ₂仅显示出与朗缪尔等温线的良好相关性。不考虑其单层吸附动力学，0.1 mol.% La 掺杂的 TiO ₂ 由于La掺杂引起的表面积和氧空位的增加，已经显示出最高的染料吸附和效率。