Adhyaksa Gede Widia Pratama, Baek Se-Woong, Lee Ga In, Lee Dong Ki, Lee Jung-Yong, Kang Jeung Ku
Graduate School of Energy, Environment, Water, and Sustainability (EEWS), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea).
ChemSusChem. 2014 Sep;7(9):2461-8. doi: 10.1002/cssc.201402146. Epub 2014 Jun 11.
Here, we report plasmonically enhanced thin dye-sensitized solar cells (DSSCs) in an imidazolium-dicyanamide based ionic liquid, in which size-controlled metal (silver) nanoparticles (AgNPs) with passivation layers of a few nanometers are arranged into the electrolyte and photo-electrodes. It was revealed that the AgNPs in the electrolyte and the photo-electrode have distinct effects on device performance via different coupling mechanisms. Strong far-field scattering is critical in the electrolyte while near-field scattering is efficient in the photo-electrode. Indeed, we find that the power conversion efficiency of the DSSC can be substantially improved by a synergistic arrangement of the AgNPs in the electrolyte and the photo-electrode. Furthermore, an imidazolium-dicyanamide based nonvolatile ionic liquid electrolyte for MNPs is demonstrated to provide thin plasmonic DSSCs with good stability.
在此，我们报道了基于咪唑鎓 - 二氰胺的离子液体中的等离子体增强型薄染料敏化太阳能电池（DSSC），其中具有几纳米钝化层的尺寸可控金属（银）纳米颗粒（AgNP）被布置在电解质和光电极中。结果表明，电解质和光电极中的AgNP通过不同的耦合机制对器件性能有不同影响。强远场散射在电解质中至关重要，而近场散射在光电极中效率较高。实际上，我们发现通过在电解质和光电极中协同布置AgNP，可以大幅提高DSSC的功率转换效率。此外，已证明一种基于咪唑鎓 - 二氰胺的用于MNPs的非挥发性离子液体电解质可为薄等离子体DSSC提供良好的稳定性。
