Homogeneous Emission Line Broadening in the Organo Lead Halide Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3–<i>x</i></sub>Cl<sub><i>x</i></sub>
The organic–inorganic hybrid perovskites methylammonium lead iodide (CH3NH3PbI3) and the partially chlorine-substituted mixed halide CH3NH3PbI3–xClx emit strong and broad photol...