Luminescent down-shifting (LDS) layers applied on top of solar cells can potentially increase solar cell performance due to the better match of the incident irradiance spectrum reaching the cell to its spectral response. In this study, the adding-doubling tool is presented, which allows fast predictions of the influence of LDS sheets on solar cell performance. The model is validated by comparing its predictions to experimental data. Four LDS sheets including different conversion materials were investigated. The modeling tool was able to predict the external quantum efficiency with an average deviation of 0.02.
We analyze the stability of the photoluminescence efficiency of flash core/shell quantum dots (QDs). We show that shell design is crucial to suppress thermal quenching and long-term photodegradation, where a radial composition change from CdS to ZnS results in QDs that surpass the stability requirements of display applications.
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