Fig. 5: CPP materials towards circular polarization-based multicolor display.
From: Design of circularly polarized phosphorescence materials guided by transfer learning
a Schematic diagram for the CPP materials with controllable color switching performance in phosphorescent emission. b The phosphorescence (Ph), CD and circularly polarized phosphorescent (CPP) spectra of the DBCz/PVA hybrid chiral films. c Different color switching performance could be achieved by only varying the stretching degree of PVA layers (90% and 120%, respectively). d The influence of stretching on the glum value of the hybrid films. The data is sourced from a virtual database, which was generated under the following conditions: the phosphorescent molecule is DBCz, the dye of the polarization layer is Direct Blue 71, the thickness of the phase retardation layer is 48 μm, and the stretching degree of the phase retardation layer is varied from 80% to 120%. The interval of the stretching degree between each group of data is 1. e Color gamut of the CPP materials in CIE1931 chromaticity diagram. A typical sRGB color gamut is shown for comparison.
