CsPbIBr2 has gained intense attention as the absorber material of all-inorganic perovskite solar cells (PSCs), owing to its upgraded stability and suitable bandgap. Yet, the efficiency level of CsPbIBr2 PSCs...
Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.