In-Depth Analysis on the Fabry-Perot Effect of Cs₂AgBiBr₆ Double Perovskite-Based Solar Cells via Optical Path Length Modulation

Figure 4

Optical performance of absorption layer within Cs₂AgBiBr₆ double perovskite-based architecture with different TiO₂ layer thicknesses under solar light plane wave illumination. Top data indicate the absorption of designed architecture, and bottom data indicate the reflection of designed architecture.