Three-dimensional narrow-bandgap perovskite semiconductor ferroelectric methylphosphonium tin triiodide for potential photovoltaic application

摘要

A novel A-site three-dimensional organic–inorganic halide perovskites (3D OIHP) ferroelectric, methylphosphonium tin triiodide (MPSnI3), featuring a narrow bandgap of 1.43 eV, was synthesized. The integration of ferroelectricity with initially moderate efficiency (2.23%) may afford a promising platform to investigate the ferroelectric photovoltaic effect in organic–inorganic halide perovskite solar cells.