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A numerical study on the influence of interface recombination on performance of carbon nanotube/GaAs solar cells

机译：界面复合对碳纳米管/ GaAs太阳能电池性能影响的数值研究

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摘要

Carbon nanotubes (CNT) have unique electronic properties and remarkable optical properties. Despite of on layer thickness of CNTs, it has able to absorb photons from visible to far infrared and terahertz. These unique properties lets to create hetero-junction devices by semiconductor/CNTs or metal/CNTs junctions e.g. photodiodes, sensor and heterojunction solar cell. The CNTs can play the role of a heterojunction component for charge separation as a high conductive network for charge transport and as a transparent electrode for light illumination and charge collection. The main objective of the present article is to establish a relation between interface recombination and the characteristics parameters of the heterojunction solar cell based on armchair single walled carbon nanotube as absorber and GaAs as window. It is shown that by increasing the interface recombination open circuit voltage decreases dramatically. Depletion current, J-V characteristic and ideality factor variation in terms of interface recombination has been calculated. Interface recombination at the SWCNT/GaAs interface of the cell leads to a considerable drop of the cell voltage and to a lesser extent to the associated reduction in the cell short circuit current.
机译：碳纳米管（CNT）具有独特的电子性能和出色的光学性能。尽管CNT的层厚，它仍能够吸收可见光，远红外光和太赫兹光子。这些独特的特性使得可以通过半导体/ CNT或金属/ CNT的结（例如结）形成异质结器件。光电二极管，传感器和异质结太阳能电池。 CNT可以起到电荷分离的异质结成分的作用，作为电荷传输的高导电网络，并作为光照射和电荷收集的透明电极。本文的主要目的是建立基于扶手椅单壁碳纳米管作为吸收剂和GaAs作为窗口的异质结太阳能电池的界面复合与特性参数之间的关系。结果表明，通过增加界面重组，开路电压急剧下降。已经计算了界面重组方面的耗尽电流，J-V特性和理想因子变化。电池的SWCNT / GaAs界面处的界面重组会导致电池电压大幅下降，并在较小程度上导致电池短路电流的相应降低。

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