论文标题
关于使用石墨烯改善浓缩器III-V多孔太阳能电池的性能
On the Use of Graphene to Improve the Performance of Concentrator III-V Multijunction Solar Cells
论文作者
论文摘要
石墨烯已经在光伏的光伏研究中进行了深入研究，这些光伏，基于薄膜，染料敏化，量子点，纳米线等的新兴太阳能电池等。但是，这些融合石墨烯的太阳能电池的典型效率低于16％。因此，尚未显示石墨烯的光伏电位。在这项工作中，证明了石墨烯用于浓度应用于III-V多峰太阳能电池，实际上是效率最高的太阳能电池。首先，进行石墨烯层的宽光电表征。然后，将石墨烯层掺入三结太阳能电池中，从而将其串联电阻降低了35％（相对），从而导致填充系数在1,000太阳的浓度下增加4％（绝对）。同时，石墨烯的光吸收在0-1.8％的范围内产生相对的短路电流密度降低。结果，相对于没有石墨烯的三重连接太阳能电池，实现了1,000个太阳浓度的绝对效率提高接近1％。还评估了合并一个和两个石墨烯单层的影响。
Graphene has been intensively studied in photovoltaics focusing on emerging solar cells based on thin films, dye-sensitized, quantum dots, nanowires, etc. However, the typical efficiency of these solar cells incorporating graphene are below 16%. Therefore, the photovoltaic potential of graphene has not been already shown. In this work the use of graphene for concentration applications on III-V multijunction solar cells, which indeed are the solar cells with the highest efficiency, is demonstrated. Firstly, a wide optoelectronic characterization of graphene layers is carried out. Then, the graphene layer is incorporated onto triple-junction solar cells, which decreases their series resistance by 35% (relative), leading to an increase in Fill Factor of 4% (absolute) at concentrations of 1,000 suns. Simultaneously, the optical absorption of graphene produces a relative short circuit current density decrease in the range of 0-1.8%. As a result, an absolute efficiency improvement close to 1% at concentrations of 1,000 suns was achieved with respect to triple junction solar cells without graphene. The impact of incorporating one and two graphene monolayers is also evaluated.
