Using samples synthesized at CNMS, a combination of neutron scattering, x-ray scattering, and density functional calculations shows that disordering of the large organic cations in hybrid perovskites is crucial and beneficial for their optoelectronic properties.
B. Yang, W. Ming, M-H. Du, J. Keum, A. A. Puretzky, C. M. Rouleau, J. Huang, D. B. Geohegan, X. Wang, and K. Xiao, "Real-time observation of order-disorder transformation of organic cations induced phase transition and anomalous photoluminescence in hybrid perovskites," Adv. Mater. (2018).
