Fig. 4From: Enhanced Photovoltaic Performance of Dye-Sensitized Solar Cells by Efficient Near-Infrared Sunlight Harvesting using Upconverting Y2O3:Er3+/Yb3+ Phosphor Nanoparticles a J-V curves and b IPCE spectra of the DSSCs with (red solid line) and without (black solid line) Y2O3:Er3+/Yb3+ nanoparticles (1 wt%). The inset of a shows the schematic diagram of the DSSC with Y2O3:Er3+/Yb3+ nanoparticles and its photovoltaic performance parametersBack to article page