Thermally evaporated hybrid perovskite for hetero-structured green light-emitting diodes

摘要

Thermal evaporation of green-light emitting perovskite (MaPbBr_3) films is reported. Morphological studies show that a soft thermal treatment is needed to induce an outstanding crystal growth and film organization. Hetero-structured light-emitting diodes, embedding as-deposited and annealed MAPbBr_3 films as active layers, are fabricated and their performances are compared, highlighting that the perovskite evolution is strongly dependent on the growing substrate, too.