Highly efficient semitransparent perovskite solar cells with spectrally selective electrodes

Area of Science:

• Materials Science
• Renewable Energy
• Optoelectronics

Background:

• Aesthetic integration of solar cells is vital for buildings, vehicles, and devices.
• Color-selective solar cells face challenges balancing power conversion efficiency (PCE) and stability.
• Perovskite solar cells offer potential but require optimized spectral selectivity.

Purpose of the Study:

• To investigate microcavity structures in spectrally selective electrodes (SSEs) for color-tunable semitransparent perovskite solar cells (ST-PSCs).
• To achieve high color purity and maintain high PCE in lead-free ST-PSCs.
• To explore the balance between aesthetic appeal and commercial viability in solar cell design.

Main Methods:

• Modeling the performance of lead-free ST-PSCs with integrated microcavity structures.
• Analyzing PCE, CIE color coordinates, and full width at half maximum (FWHM).
• Investigating performance under indoor spectral conditions and transmission spectrum adjustments.

Main Results:

• Microcavity structures in tin-based perovskite solar cells achieved a 48.05% transmission rate and 13.80% PCE.
• Precise color tunability across the visible spectrum was demonstrated.
• The approach maintained high efficiency and optical performance.

Conclusions:

• Microcavity structures offer a viable strategy for balancing solar cell aesthetics and performance.
• This method enables optimal color adjustment and environmental stability for ST-PSCs.
• The findings support the commercial viability of aesthetically pleasing and efficient solar cells.