Charge-carrier dynamics in vapour-deposited films of the organolead halide perovskite CH 3 NH 3 PbI 3− x Cl x
… For the vapour-deposited films of CH 3 NH 3 PbI 3−x Cl x investigated here, we find that the ratio φk 2 /(φμ) again lies below the value of e(ε 0 ε r ) −1 expected from Langevin theory by …