When the surface of a PV cell is covered with a colored film used as an optical filter, some of the incident sunlight that passes through the film are used to generate electrical energy, while the other part is reflected or absorbed.
The results showed that colored filters have no significant impact on the solar cell voltage output, which peaked since sunrise. However, the short-circuit current is affected by using the color filters. When covered with the yellow filter the cell produces more current than when covered with the red or blue respectively.
Consequently, highly efficient colored perovskite solar cells having 10.12, 8.17 and 7.72% of the PCE for the red, green, and blue (RGB) colors, respectively, were demonstrated.
In this work, we present high-performance decorative PVSK solar cells creating easily tunable reflective colors with angle invariant features up to 60° by exploiting localized surface plasmon resonances (LSPRs) in an array of ultrathin metallic nanowire patterned at the subwavelength scale on a transparent substrate for the first time.
Thus, extraordinary color changes from blue to yellow could be achieved while keeping transparency. Thereupon, photovoltaic performance showed notable improvements, with Jsc increasing from 7.98 mA/cm2 to 9.95 mA/cm2 and 10.45 mA/cm2 for 1DPC5 − 425 and 1DPC3 − 650, respectively.
Furthermore, the spectral reflectance and transmittance of these two photonic cavity-integrated colorful solar cell devices exhibit a relatively broad resonance that contains a wide range of off-resonant wavelength components, which cannot be efficiently harnessed by the PVSK solar cells and degrade the color purity at the same time.