Fig. 1. (a) 2D colormap of pressure-dependent PL intensity and wavelength of the phenanthrene crystal. (b) In situ PL spectra of the phenanthrene crystal below 1.65 GPa. (c) Pressure-dependent PL wavelength and intensities. (d) 2D colormap of high-pressure UV-vis absorption spectra of the phenanthrene crystal. (e) Schematic illustrations of the band gap changes. (f) The sketch map for molecular packing of the phenanthrene crystal.
