Perovskite solar cells (PSCs) have accomplished an efficiency of ~25%. The most commonly used perovskite solar cell is methyl-ammonium lead iodide. As all PSCs with PCEs > 20% use Pb-based perovskites ...

Figure 2. Initial electron cooling dynamics on the ps time scale. (A) Pseudocolor plot (intensity) of TR-2PPE spectra as a function of energy (above E F) and pump–probe delay (Δt) for CH 3 NH 3 PbI 3 ...