铝等离子体纳米颗粒增强了染料敏化太阳能电池。

Aluminum plasmonic nanoparticles enhanced dye sensitized solar cells.

作者信息

Xu Qi, Liu Fang, Liu Yuxiang, Meng Weisi, Cui Kaiyu, Feng Xue, Zhang Wei, Huang Yidong

出版信息

Opt Express. 2014 Mar 10;22(5):A301-10.

Abstract

We present an investigation on utilizing plasmonic aluminium (Al) nanoparticles (NPs) to enhance the optical absorption of dye-sensitized solar cells (DSCs). The Al NPs exhibit not only the light absorption enhancement in solar cells with localized surface plasmon (LSP) effect but also the chemical stability to iodide/triiodide electrolyte. Besides, the lower work function (~~4.06 eV), compared with that of TiO(2) (~~4.6 eV), may suppress the quenching processes, such as charge transfer to metal NPs, to reduce the loss. Thus, high concentration of Al NPs could be incorporated into the TiO(2) anodes, and the power conversion efficiency (PCE) of DSCs is improved by nearly 13%. Moreover, electrochemical impedance spectroscopy (EIS) characterization also indicates that the plasmonic DSCs with Al NPs present better electrochemical performance than regular ones, which contributes to the improvement of PCE of the device.

摘要

我们展示了一项关于利用等离子体铝（Al）纳米颗粒（NPs）来增强染料敏化太阳能电池（DSCs）光吸收的研究。Al NPs不仅在具有局域表面等离子体（LSP）效应的太阳能电池中表现出光吸收增强，而且对碘化物/三碘化物电解质具有化学稳定性。此外，与TiO₂（约4.6 eV）相比，较低的功函数（约4.06 eV）可能会抑制诸如电荷转移到金属NPs等猝灭过程，以减少损失。因此，可以将高浓度的Al NPs掺入TiO₂阳极中，DSCs的功率转换效率（PCE）提高了近13%。此外，电化学阻抗谱（EIS）表征还表明，具有Al NPs的等离子体DSCs比常规DSCs具有更好的电化学性能，这有助于提高器件的PCE。