chlorophyll-a and perovskite

Chlorophylls (Chls) are abundant, naturally occurring pigments that play key roles in light-harvesting and electron/energy transfer in natural photosynthetic apparatus. To demonstrate the idea that Chls are suitable hole transporters, we employed two Chl derivatives, Chl-1 and Chl-2, which self-assembled readily into π-stacking aggregates through a simple spincasting process, in perovskite solar cells (PSCs). The Chl aggregate films exhibit an ultra-smooth film surface, high hole mobility, appropriate energy levels, and efficient hole injection efficiencies that are all key characteristics for efficient hole transporters in PSCs. CH

Topics: Biocompatible Materials; Calcium Compounds; Chlorophyll; Costs and Cost Analysis; Microscopy, Atomic Force; Microscopy, Electron, Scanning; Oxides; Solar Energy; Spectrophotometry, Ultraviolet; Titanium; X-Ray Diffraction