Xu Qi, Liu Fang, Meng Weisi, Huang Yidong
State Key Lab. of Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China.
Opt Express. 2012 Nov 5;20(23):A898-907.
We present an investigation on introducing core-shell Au@PVP nanoparticles (NPs) into dye-sensitized solar cells. As a novel core-shell NPs structure, Au@PVP present not only the chemical stability to iodide/triiodide electrolyte, but also the adhesiveness to dye molecules, which could help to localize most of dye molecules around plasmonic NPs, hence increasing the optical absorption consequently the power conversion efficiency (PCE) of the device. We obtain a PCE enhancement of 30% from 3.3% to 4.3% with incorporation of Au@PVP NPs. Moreover, the device performance with different concentration of Au@PVP NPs from 0 to 12.5 wt% has been studied, and we draw the conclusion that the performance of DSCs could be well improved through enhancing the light absorption by local surface plasmon (LSP) effect from Au@PVP NPs with an optimized concentration.
我们展示了一项关于将核壳结构的金@聚乙烯吡咯烷酮纳米粒子（NPs）引入染料敏化太阳能电池的研究。作为一种新型的核壳纳米粒子结构，金@聚乙烯吡咯烷酮不仅对碘化物/三碘化物电解质具有化学稳定性，而且对染料分子具有粘附性，这有助于将大部分染料分子定位在等离子体纳米粒子周围，从而增加光吸收，进而提高器件的功率转换效率（PCE）。通过掺入金@聚乙烯吡咯烷酮纳米粒子，我们使功率转换效率从3.3%提高了30%，达到4.3%。此外，还研究了不同浓度（0至12.5 wt%）的金@聚乙烯吡咯烷酮纳米粒子对器件性能的影响，我们得出结论，通过具有优化浓度的金@聚乙烯吡咯烷酮纳米粒子的局域表面等离子体（LSP）效应增强光吸收，可以很好地提高染料敏化太阳能电池的性能。
