Amidinium‐Based 2D Spacer Cations Enhance Efficiency and Hh

2d 102D3D perovskite heterojunctions represent a promising approach to enhance the efficiency and stability of perovskite solar cells (PSCs).Probability of getting 1 10's is close to 0.1, about 10% percent. This is calculated by multiplying together all the probabilities of getting a 10 for each dice that has a 10.