Unique Hydrogen Bonding Correlating with a Reduced Band Gap and Phase Transition in the Hybrid Perovskites (HO(CH<sub>2</sub>)<sub>2</sub>NH<sub>3</sub>)<sub>2</sub>PbX<sub>4</sub>(X = 1, Br)
Autores:Amédée Riou, Patrick Batail, Nicolas Mercier, Sylvain Poiroux