基于ZnO纳米线阵列和大量氧化亚铜吸收体的异质结光伏电池模型
Modeling of heterojunction photovoltaic cells based on ZnO nanowires array and earth-abundant cuprous oxide absorbers
摘要：
作为一种潜在的解决方案，低成本的高效太阳能电池，径向结组成的ZnO纳米线阵列嵌入在Cu 2 O薄膜已被理论建模。已经进行了计算以探索这种基于线的太阳能电池的性能的几何依赖性。通过适当地设置材料特性和电池尺寸，在少子扩散长度为2 μm的材料中，可以获得19.7%的合理的功率转换效率。还研究了体、界面和接触相关状态对太阳能电池性能的不利影响，从中提取了一系列材料的效率在~22%和~12%之间，从最佳到严重劣质。研究结果表明，合理的器件设计在实现高效的Cu 2 O/ZnO线径向结太阳能电池中起着至关重要的作用。
英文摘要：
As a potential solution for low-cost efficient solar cells, radial junctions consisting of ZnO nanowires arrays embedded in Cu2O thin films have been theoretically modeled. Calculations have been performed to explore the geometric dependence of performance of such wire-based solar cells. By properly setting material properties and cell dimensions, a reasonable power conversion efficiency of 19.7% can be expected in a material with 2 μm minority carrier diffusion length. The detrimental effects of bulk, interface and contact-related states on solar cell performance have also been studied, from which the efficiencies between ~22% and ~12% for a series of materials, ranging from optimal to seriously poor-quality, are extracted. The findings suggest that rational device design plays a crucial role in implementing efficient Cu2O/ZnO wire radial junction solar cells.
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