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Including excitons in semiconductor solar cell modelling

机译:在半导体太阳能电池建模中包括激子

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摘要

Excitonic effects are introduced in standard semiconductor device modelling of solar cells. Previous work by the groups of Green and of Zhang is extended here to also include field dependent exciton dissociation in the space charge layer (SCL) of a n~+p diode, and exciton surface dissociation or charge transfer at the contact or at the junction. A clear result is that it is possible to apply the standard semiconductor device modelling frame to situations where excitons are dominant. Even when there is only exciton (and no free eh) generation an almost ideal short circuit current can be collected when there is sufficient exciton dissociation, either at an interface, or in the bulk, or in the SCL. The possible application of this model to organic solar cells is briefly explored.
机译:在标准的太阳能电池半导体器件建模中引入了激子效应。 Green和Zhang小组的先前工作在此扩展为还包括n〜+ p二极管的空间电荷层(SCL)中与场有关的激子解离,以及在触点或结处的激子表面解离或电荷转移。明显的结果是可以将标准半导体器件建模框架应用于激子占主导地位的情况。即使只有激子(没有自由eh)生成,当在界面,本体或SCL中有足够的激子解离时,也可以收集几乎理想的短路电流。简要探讨了该模型在有机太阳能电池中的可能应用。

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