Department of Chemistry and Argonne-Northwestern Solar Energy Research Center (ANSER), Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
Langmuir. 2011 Dec 6;27(23):14609-14. doi: 10.1021/la203557f. Epub 2011 Nov 10.
Localized surface plasmon resonance (LSPR) by silver nanoparticles that are photochemically incorporated into an electrode-supported TiO(2) nanoparticulate framework enhances the extinction of a subsequently adsorbed dye (the ruthenium-containing molecule, N719). The enhancement arises from both an increase in the dye's effective absorption cross section and a modest increase in the framework surface area. Deployment of the silver-modified assembly as a photoanode in dye-sensitized solar cells leads to light-to-electrical energy conversion with an overall efficiency of 8.9%. This represents a 25% improvement over the performance of otherwise identical solar cells lacking corrosion-protected silver nanoparticles. As one would expect based on increased dye loading and electromagnetic field enhanced (LSPR-enhanced) absorption, the improvement is manifested chiefly as an increase in photocurrent density ascribable to improved light harvesting.
银纳米粒子的局域表面等离子体共振（LSPR）通过光化学方式掺入到电极支撑的 TiO(2)纳米颗粒框架中，增强了随后吸附染料（含钌分子，N719）的消光。增强来自于染料有效吸收截面的增加和框架表面积的适度增加。将银修饰的组件作为光电阳极应用于染料敏化太阳能电池中，可实现光到电的能量转换，总效率为 8.9%。与没有防腐蚀银纳米粒子的相同太阳能电池相比，这一性能提高了 25%。基于增加的染料负载和电磁场增强（LSPR 增强）吸收，正如人们所预期的那样，这种改进主要表现为光电流密度的增加，归因于光收集的改善。
