Light absorption enhancement in ultrathin perovskite solar cells using plasmonic light trapping and bionic anti-reflection coating

Perovskite solar cells have attracted much attention due to their easy fabrication, low cost, and high photoelectric conversion efficiency. To reduce pollution, the absorption layer thickness of perovskite should be reduced. Moreover, ultrathin can effectively depress electron–hole recombination in process carrier transfer. However, light cell is not satisfactory. The promising pathways design absorption-enhanced are plasmonic trapping anti-reflection coating. In this paper, we propose a for enhancement with 100 nm through integration structure arrays moth-eye textured coatings. Due scattering antireflection effect, an optimized 41% has been achieved, compared blank layer. case, silver cylindrical array radius nm, height 120 coverage 12% embedded into rear-side hole transport Inverted pyramids textures base length 180 depth 125 located on front surface coating further improve absorption. absorbance dramatically raised 72.51%, which comparable that 300 (72.86%). simulation results pave way realization environmental-friendly high-performance optoelectronic devices.