Yu-Meng You

TL;DR: Trimethylchloromethyl ammonium trichloromanganese(II), an organic-inorganic perovskite ferroelectric crystal processed from aqueous solution, has a large d33 of 185 picocoulombs per newton and a high phase-transition temperature of 406 kelvin (K) (16 K above that of BTO), which makes it a competitive candidate for medical, micromechanical, and biomechanical applications.

TL;DR: A family of metal-free organic perovskite ferroelectrics with the characteristic three-dimensional structure is found, among which MDABCO (N-methyl-N'-diazabicyclo[2.2]octonium)–ammonium triiodide has a spontaneous polarization, which makes it attractive for use in flexible devices, soft robotics, biomedical devices, and other applications.

TL;DR: A molecular material with piezoelectric properties comparable to the industry-standard ceramic lead zirconate titanate is described, the exceptional properties come from finding a molecular solid-solution series that allows for compositional optimization of the piezoeselectric properties.

TL;DR: By adjusting the composition x, the bandgap is successfully tuned from previously reported 3.65 eV to as low as 2.74 eV, and the excellent ferroelectricity was kept intact and may contribute to improving the photoelectronic and/or photovoltaic performance of hybrid perovskite-type compounds.

TL;DR: The new hybrid compound (3-pyrrolinium)MnCl3 has a very high Curie temperature, large spontaneous electronic polarization, and high fatigue resistance, as well as high emission efficiency, which is a further step to the practical use of ferroelectric luminescence based on organic-inorganic compounds.