Eu 掺杂 TiO-ZrO 纳米复合材料提高染料敏化太阳能电池的效率。
Enhanced Efficiency of Dye Sensitized Solar Cell Using Eu Doped TiO-ZrO Nanocomposite.
机构信息
Department of Physics, Smt. M.D. Patel Institute of Physical Science & Research, Anand, India.
Applied Physics Department, Faculty of Technology & Engineering, The M. S. University of Baroda, Vadodara, India.
出版信息
Recent Pat Nanotechnol. 2022;16(4):333-338. doi: 10.2174/1872210515666210614163845.
BACKGROUND
Hydrothermal method was used to prepare TiO-ZrO and Eu doped TiO-ZrO nanocomposites for dye sensitized solar cell app lication.
METHODS
X-ray diffraction was used to study the structural properties of prepared samples. Anatase and Rutile phases of TiO and Monoclinic and tetragonal phases of ZrO have been detected from XRD in prepared samples. The crystallite size of prepared samples lies between 6 to 18 nm. Absorption edge has been shifted to the longer wavelength region. The optical bandgap of TiO-ZrO (2.15 eV) and Eu doped TiO-ZrO nanocomposites (2.03 eV) have been calculated using Tauc's plot. A decrease in bandgap compared to pure TiO2 has been observed. The increased refractive index has been determined from UV -Visible spectra.
RESULTS
Because of the high refractive index photons can stay for longer period of time inside the material and then they can be used to generate electrons in dye sensitized solar cell. An attempt was made to prepare an inexpensive dye sensitized solar cell by replacing synthetic organic dye with natural dye (pomegranate juice) and platinum coated counter electrode by carbon coated electrode. The improvement in efficiency has been recorded for prepared samples and it has been found to be 0.71%, 1.97% and 6.25% for TiO2, TiO-ZrO nanocomposite and Eu doped TiO-ZrO nanocomposite respectively.
CONCLUSION
A simple and cost-effective DSSC prepared by materials is capable of producing a good amount photocurrent.
背景
水热法被用于制备 TiO-ZrO 和 Eu 掺杂 TiO-ZrO 纳米复合材料，以应用于染料敏化太阳能电池。
方法
X 射线衍射用于研究制备样品的结构特性。在制备的样品中，从 XRD 检测到 TiO 的锐钛矿相和金红石相以及 ZrO 的单斜相和四方相。制备样品的晶粒尺寸在 6 至 18nm 之间。吸收边缘已移至较长的波长区域。使用 Tauc 图计算了 TiO-ZrO（2.15eV）和 Eu 掺杂 TiO-ZrO 纳米复合材料（2.03eV）的光学带隙。与纯 TiO2 相比，观察到带隙减小。从 UV-可见光谱确定了折射率的增加。
结果
由于高折射率，光子可以在材料内部停留更长的时间，然后可以用于在染料敏化太阳能电池中产生电子。试图通过用天然染料（石榴汁）代替合成有机染料，并用电镀铂的对电极代替碳涂覆的电极来制备廉价的染料敏化太阳能电池。制备样品的效率得到了提高，TiO2、TiO-ZrO 纳米复合材料和 Eu 掺杂 TiO-ZrO 纳米复合材料的效率分别提高了 0.71%、1.97%和 6.25%。
结论
由这种材料制备的简单且具有成本效益的 DSSC 能够产生相当数量的光电流。
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