Planar waveguide-nanowire integrated three-dimensional dye-sensitized solar cells.
Planar waveguide-nanowire integrated three-dimensional dye-sensitized solar cells.
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DOI：
10.1021/nl1005433
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发表时间：
2010-05
期刊：
影响因子：
10.8
通讯作者：
Ya-Jun Wei;Chen Xu;Sheng Xu;Cheng Li;Wenzhuo Wu;Zhong Lin Wang
中科院分区：
文献类型：
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作者：
Ya-Jun Wei;Chen Xu;Sheng Xu;Cheng Li;Wenzhuo Wu;Zhong Lin Wang
提出了一种将平面光波导和纳米线集成在一起的三维染料敏化太阳能电池的新方法。ZnO纳米线垂直于石英片生长。通过交替堆叠载玻片和平面电极来构造3D单元。载玻片用作光传播的平面波导。由于内部多次反射，3D结构有效地增加了光吸收表面积，而不增加到收集电极的电子路径长度，导致与平面照明情况相比，能量转换效率平均显著提高了5.8倍。我们的方法展示了一种用于构建大规模和高效3D太阳能电池的新方法，该方法可以扩展到有机和无机太阳能电池。
We present a new approach to fabricate three-dimensional (3D) dye-sensitized solar cells (DSSCs) by integrating planar optical waveguide and nanowires (NWs). The ZnO NWs are grown normally to the quartz slide. The 3D cell is constructed by alternatively stacking a slide and a planar electrode. The slide serves as a planar waveguide for light propagation. The 3D structure effectively increases the light absorbing surface area due to internal multiple reflections without increasing electron path length to the collecting electrode, resulting in a significant improvement in energy conversion efficiency by a factor of 5.8 on average compared to the planar illumination case. Our approach demonstrates a new methodology for building large scale and high-efficient 3D solar cells that can be expanded to organic- and inorganic-based solar cells.