衬底结构中14%效率CdTe太阳能电池的进展

L. Kranz, R. Schmitt, C. Gretener, J. Perrenoud, F. Pianezzi, A. Uhl, D. Keller, S. Buecheler, A. Tiwari
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引用次数: 9

摘要

碲化镉太阳能电池通常生长在叠层结构中。然而,衬底结构的增长提供了更多的结特性控制,因为CdTe的再结晶和与CdS的结形成可以解耦。本文研究了不同退火处理条件对CdS层形貌、物相及器件性能的影响。在此退火处理过程中,CdCl2的存在对于CdS层转变为六方纤锌矿和提高效率是重要的。在360°C下对CdS进行CdCl2处理,提高了器件的效率,而不会在CdS中形成针孔。在衬底结构中,CdTe太阳能电池的效率超过13%,这是向14%效率的进步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Progress towards 14% efficient CdTe solar cells in substrate configuration
CdTe solar cells are conventionally grown in superstrate configuration. However, the growth in substrate configuration offers more control of junction properties as recrystallization of CdTe and junction formation with CdS can be decoupled. In this paper the influence of various annealing treatment conditions of the CdS layer on its morphology and phase and on the device properties is presented. The presence of CdCl2 during this annealing treatment is important for the phase change of the CdS layer to hexagonal wurtzite and for high efficiencies. A CdCl2 treatment of the CdS at 360 °C improves the efficiency of the device without the adverse effect of pinhole formation in the CdS. CdTe solar cells in substrate configuration with more than 13% efficiency are achieved as a progress towards 14% efficiency.
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