研究目的
To understand long-term stability trends of organic photovoltaics (OPVs) using data analytical approaches.
研究成果
A multivariate approach has been applied to analyze and understand the patterns and structure of a dataset containing OPV performance and stability information. The MLR algorithm has been adopted in order to analyze the dataset, thereby allowing E0, T80, and TS80 to be predicted for ISOS-L data and ISOS-D data. The quality of the regression fit can be quantified by the R2 metric. The regression t-values are also extracted, which quantify how significant a particular parameter is for the model predictions, thus allowing the most significant factors affecting the performance and stability to be ascertained.
研究不足
One of the limitations of the MLR approach is that data must be grouped into categories. Additional factors such as whether the active layer is planar or consists of a bulk-heterojunction, the composition of the active layer, and the deposition technique can be included. However, outliers of data can create significant noise in the model.