Enhancing the Power Conversion Efficiency for Polymer Solar Cells by Incorporating Luminescent Nanosolid Micelles as Light Converter

In this research contribution, the idea is created that Ln3+-doped nanosolid micelles have first been applied to enhance the photovoltaic properties of novel hybrid polymer solar cells (HPSCs). Among other publications in the literature, we have never found the same or similar work to be published previously. The new method of Ln3+-doped diblock copolymer (DBC) to develop nanosolid micelle luminescent materials is established. Very importantly the applicable technique to incorporate nanosolid micelles into PSCs by spin-coating on the surface of the indium tin oxide (ITO) layer is accomplished after comparing the different cooperation methods. This research contribution elucidates two novel HPSCs containing Ln3+ nanosolid micelles formed by Ln3+-doped diblock copolymer (Ln3+-DBC) and organic conjugated ligands. The Ln3+-DBC luminescent nanosolid micelles (LNSMs) are formed via coordination between Ln3+ ions and DBC, and are readily dispersed in a hydrophobic solvent. Nanosolid micelles can be incorporated into PSCs by spin-coating on the surface of the indium tin oxide (ITO) layer, to increase the absorption of sunlight. Critically, the presence of the LNSMs increases PSC absorption of light and increases the power conversion efficiency (PCE) of PTB7-Th/PC71BM-based devices from 8.68% to 9.61%, increased by 10.71%, which is mainly caused by the enhanced short-circuit current density (Jsc), increased by 12.69% . In addition, the incorporation of LNSMs improved the stability of devices by protecting the active materials’ degradation from UV light