水热法在bixin敏化太阳能电池上合成mg掺杂TiO2作为光阳极

None Winda Rahmalia, None Intan Syahbanu, None Nurlina, None Ayu Widya Sari, None Septiani
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引用次数: 0

摘要

合成了掺杂镁的二氧化钛(TiO2),用于染料敏化太阳能电池(DSSC)的光阳极。本研究使用的DSSC组分为光敏剂(bixin)、电解质()、阴极(铂)和光阳极(Mg-TiO2)。本研究旨在根据XRD和DR/UV-Vis分析结果,确定mg掺杂TiO2光阳极随掺杂浓度变化的特性,并确定以mg掺杂TiO2和未掺杂TiO2作为光阳极的DSSC的最大效率转换能。采用水热法制备了TiO2和Mg-TiO2, Mg掺杂浓度根据摩尔比分别为0、0.5、1和2%。在锐钛矿型TiO2膏体中加入2% Mg, TiO2带隙从3.15 eV减小到2.60 eV。分析结果表明,Mg掺杂剂的加入使晶体尺寸减小。Mg掺杂在TiO2上也能形成新的能级,使TiO2的带隙能降低。此外,Mg掺杂浓度的增加也使TiO2的吸收能力从紫外波长区转移到可见光区。掺杂mg - TiO2光阳极为0.5、1和2%时,DSSCs的最大能量转换效率分别为0.045;分别为0.070和0.172%,这三个效率值均高于未掺杂TiO2的0.017%。结果表明,在TiO2光阳极上添加Mg掺杂剂可以提高DSSC的效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis of Mg-doped TiO2 Using a Hydrothermal Method as Photoanode on Bixin-Sensitized Solar Cell
Titanium dioxide (TiO2) with magnesium (Mg) doping for dye-sensitized solar cell (DSSC) photoanode application has been synthesized. DSSC components used in this study were photosensitizer (bixin), electrolyte (), cathode (platinum), and photoanode (Mg-TiO2). This research aims to determine the characteristics of Mg-doped TiO2 photoanode with variations in dopant concentration based on the results of XRD and DR/UV-Vis analysis, as well as to determine the maximum efficiency conversion energy of DSSC using Mg-doped TiO2 and undoped TiO2 as photoanodes. The synthesis of TiO2 and Mg-TiO2 was carried out using the hydrothermal method with variations in the concentration of Mg dopant of 0, 0.5, 1, and 2% based on the molar ratio. The presenceof 2% of Mg in anatase TiO2 paste decreased the TiO2 band gap from 3.15 to 2.60 eV. Analysis results show that adding Mg dopant decreased the crystal size. Mg dopants on TiO2 could also form new energy levels, which reduced the band gap energy of TiO2. In addition, the increased concentration of Mg dopants also shifted the absorption capacity of TiO2 from the ultra-violet (UV) wavelengths region to the visible light area. The maximum energy conversion efficiency of the DSSCs with Mg-doped TiO2 photoanode of 0.5, 1, and 2% are 0.045; 0.070, and 0.172%, respectively, where these three efficiency values are higher than undoped TiO2 (0.017%). The results proved that the presence of Mg dopants on the TiO2 photoanode can increase the efficiency of DSSC.
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