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首页> 外文期刊>RSC Advances >One-step anion-assisted electrodeposition of ZnO nanofibrous networks as photoanodes for dye-sensitized solar cells
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One-step anion-assisted electrodeposition of ZnO nanofibrous networks as photoanodes for dye-sensitized solar cells

机译：一步一步阴离子辅助电沉积ZnO纳米纤维网络作为染料敏化太阳能电池的光阳极

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摘要

A highly efficient ZnO photoanode consisting of three-dimensional (3D) nanofibrous-like networks (NFs) for dye-sensitized solar cells (DSSCs) was synthesized using a one-step and seed-layer-free electrodeposition on an indium-tin-oxide (ITO) substrate at 75 degrees C in a solution containing Zn(NO3)(2), KCl, NaCH3COO, and Na3C6H5O7. In this solution, KCl as the supporting electrolyte promotes the reduction of NO3- and the diffusion of Zn2+, whereas CH3COO- and C6H5O73- anions act as the capping agents to selectively inhibit ZnO growth along the c-axis. The photoelectrochemical results reveal that the DSSC based on ZnO NFs has the highest power conversion efficiency (3.78%) in comparison with those of DSSCs based on nanosheets (1.36%), nanorods (2.18%), and microplates (2.55%). This can be attributed to the large dye adsorption amount, efficient light scattering and direct electron transfer networks, which lead to a significant improvement in solar cell performance. Therefore, the ZnO NFs structure can be considered as a promising and efficient photoanode for DSSCs.
机译：使用一步法和无籽层电沉积在氧化铟锡上合成了由三维（3D）纳米纤维状网络（NFs）组成的高效ZnO光阳极，用于染料敏化太阳能电池（DSSC）。 （ITO）基板在75摄氏度下于包含Zn（NO3）（2），KCl，NaCH3COO和Na3C6H5O7的溶液中。在这种溶液中，氯化钾作为辅助电解质可促进NO3-的还原和Zn2 +的扩散，而CH3COO-和C6H5O73-阴离子则作为封端剂，选择性抑制ZnO沿c轴的生长。光电化学结果表明，与基于纳米片（1.36％），纳米棒（2.18％）和微孔板（2.55％）的DSSC相比，基于ZnO NFs的DSSC具有最高的功率转换效率（3.78％）。这可以归因于染料吸附量大，有效的光散射和直接的电子转移网络，这导致太阳能电池性能的显着改善。因此，ZnO NFs结构可以被认为是DSSC的有希望和有效的光阳极。

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