C. M.  Sutter-Fella, Li, Y., Cefarin, N., Buckley, A., Ngo, Q. P., Javey, A., Sharp, I. D., and Toma, F. M., ?Low pressure vapor-assisted solution process for tunable band gap pinholefree methylammonium lead halide perovskite films?, Journal of Visualized Experiments, vol. 2017, 2017.