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首页> 外文期刊>Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion >Light-induced degradation of adapted quadruple junction thin film silicon solar cells for photoelectrochemical water splitting
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Light-induced degradation of adapted quadruple junction thin film silicon solar cells for photoelectrochemical water splitting

机译：用于光电化学水分解的适应性四结薄膜硅太阳能电池的光诱导降解

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摘要

The fabrication process of high performance quadruple junction thin film silicon solar cells is described and the application of the solar cells in an integrated photoelectrochemical water splitting device is demonstrated. It is shown that the performance of solar cells can be adjusted by varying the process parameters and the thickness of the absorber layers of the individual sub cells and by integrating microcrystalline silicon oxide as intermediate reflecting layers. Thereby current matching of the sub cells was improved and a high open-circuit voltage of 2.8 V was achieved. Furthermore, the solar cell stability against light-induced degradation was investigated. Efficiencies of 13.2% (initial) and 12.6% (after 1000 h of light-soaking) were achieved. Bias-free water splitting with a solar-to-hydrogen efficiency of 7.8% was demonstrated in an integrated photovoltaic-electrochemical device using the developed quadruple junction photocathode. Finally, it is shown that in the case of quadruple junction solar cells the light-induced degradation has a lower effect on the photovoltaic-electrochemical efficiency as on the photovoltaic efficiency. (C) 2015 Elsevier B.V. All rights reserved.
机译：描述了高性能四结薄膜硅太阳能电池的制造工艺，并说明了太阳能电池在集成光电化学水分解装置中的应用。结果表明，可以通过改变各个子电池的工艺参数和吸收层的厚度以及通过将微晶硅氧化物集成为中间反射层来调节太阳能电池的性能。由此，改善了子电池的电流匹配，并且实现了2.8V的高开路电压。此外，研究了太阳能电池对光致降解的稳定性。达到13.2％（初始）和12.6％（光浸泡1000小时后）的效率。在使用开发的四结光电阴极的集成光伏-电化学装置中，证明了无偏差水分解的太阳能对氢的效率为7.8％。最后，表明在四结太阳能电池的情况下，光致退化对光伏电化学效率的影响较小，而对光伏效率的影响较小。 （C）2015 Elsevier B.V.保留所有权利。

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