Abstract：
An optimization work on dye-sensitized solar cells (DSSCs) based on both artificial and natural dyes was carried out by a fine synthesis work embedding gold nanoparticles in a TiO2 semiconductor and perfecting the TiO2 particle sizes of the scattering layer. Noble metal nanostructures are known for the surface plasmon resonance peculiarity that reveals unique properties and has been implemented in several fields such as sensing, photocatalysis, optical antennas and PV devices. By embedding gold nanoparticles in the mesoporous TiO2 layer and adding a scattering layer, we were able to boost the power conversion efficiency (PCE) to 10.8%, using an organic ruthenium complex. The same implementation was carried out using a natural dye, betalains, extracted from Sicilian prickly pear. In this case, the conversion efficiency doubled from 1 to 2% (measured at 1 SUN illumination, 100 mW/cm2 under solar simulation irradiation). Moreover, we obtained (measured at 0.1 SUN, 10 mW/cm2 under blue light LED irradiation) a record efficiency of 15% with the betalain-based dye, paving the way for indoor applications in organic natural devices. Finally, an attempt to scale up the system is shown, and a betalain-based- dye-sensitized solar module (DSSM), with an active area of 43.2 cm2 and a PCE of 1.02%, was fabricated for the first time.
摘要：
通过在TiO2半导体中嵌入金纳米颗粒并完善散射层的TiO2粒径的精细合成工作，对基于人造和天然染料的染料敏化太阳能电池（DSSC）进行了优化工作。贵金属纳米结构是已知的表面等离子体共振特性，揭示了独特的性质，并已在多个领域，如传感，光催化,光学天线和PV器件。通过在介孔TiO2层中嵌入金纳米颗粒并添加散射层，我们能够将功率转换效率(PCE)提高到10.8%，使用有机钌络合物。使用天然染料进行相同的实施，betalains,从西西里刺梨中提取。在这种情况下,转换效率从1％提高到2％（在1个太阳照明下测得，在太阳模拟照射下100mW/cm2)。此外，我们获得(在0.1SUN下测量，在蓝光LED照射下10mW/cm2）使用基于betalain的染料的记录效率为15％，为有机天然设备的室内应用铺平了道路。最后,显示了扩大系统规模的尝试，和一个基于甜菜碱的染料敏化太阳能模块(DSSM)，有效面积为43.2cm2，PCE为1.02%，这是第一次制造。
