Research / 2020 / Article / Fig 4

Research Article

Dual-Mode Induction of Tunable Circularly Polarized Luminescence from Chiral Metal-Organic Frameworks

Figure 4

UC-CPL from chiral . (a) Simplified energy level diagram and energy-transfer upconversion process for the NaYF4:Yb, Er UCNPs. The spirals represent the detected UC-CPL in this work. (b) TEM image of . (c) CPL spectra of (dashed line) and (solid line),  nm laser.