Preparation Composition

Amount of Additives

CH₃NH₃PbI₃

None

CH₃NH₃PbI₃Cl_0.15

NH₄Cl (5 mg)

CH₃NH₃Pb_0.95As_0.05I_3.05

AsI₃ (14.5 mg)

CH₃NH₃Pb_0.95As_0.05I_3.05Cl_0.15

AsI₃ (14.5 mg) + NH₄Cl (5 mg)