Fig. 4: Optical properties of PMMA thin films with different phosphor concentrations.
a PL spectra and (b) delayed PL spectra of R-(BN)₂ at varying phosphor concentrations. c, f Time-resolved decay profiles of R-(BN)₂ and (BN)₁ monitored at 530 nm and 525 nm, respectively. d, g Phosphorescence lifetimes, and (e, h) phosphorescence quantum yields of R-(BN)₂ and (BN)₁ at different concentrations in PMMA. All the measurements taken under vacuum at 298 K (Delay = 50 µs, λex = 280 nm) (Error bars represent standard deviation from three independent measurements (n = 3); The x-axis is not to scale and has been adjusted for better visualization in panels (d, e, g, h)).
