Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics;
Southeast University;
Nanjing;
211189;
P.R.China;
School of Chemistry and Chemical Engineering;
Southeast University;
Nanjing;
211189;
P.R.China;
Molecular ferroelectric; Ferroelectric film; Domain; Polarized Raman spectroscopy; Raman imaging;