In the above equation, τD represents the characteristic diffusion timescale of d-PNCs across the confocal volume, and κ is the structural parameter describing the excitation volume. Descriptions of the other parameters, including GR(τ), are already provided in the context of Equation 1 in the above paragraph. Unlike GS(τ), GD(τ) of conventional FCS is determined by τD, which is further determined by particle size and solvent viscosity. Expanding the observation window of the studied process in conventional FCS by changing the solvent is limited by the resulting change in solvent viscosity, which is, however, tedious and not very effective in creating a much bigger window size (Figure ). On the other hand, controlling the scanning speed in sFCS provides an adjustable time window that can be easily extended to subsecond or even longer for studying slow processes (Figure ). The observation window here refers to the time duration provided by the technique for observing a specific process causing PL blinking other than diffusion/scanning. The observation window for conventional FCS is constrained by τD, which is ~few ms for PNCs dispersed in conventional solvents. When trying to investigate a comparatively slower process with a timescale exceeding a few ms using conventional FCS, the signal-to-noise ratio deteriorates rapidly. Due to this limitation, it is not possible for conventional FCS to ascertain the presence or absence of carrier dynamics in PNCs on longer timescales (in the post-ms regime). In contrast, sFCS offers a much longer time window, extending up to subsecond, which can be further expanded by reducing scan speed, as discussed previously. Hence, the integration of both conventional FCS and sFCS studies offers a robust platform for investigating carrier dynamics across a wide range of timescales spanning orders of magnitude. We performed conventional FCS in the solution phase and compared the results with that of the sFCS study performed on surface-immobilized PNCs at different excitation powers, both exhibiting a similar observation in a qualitative sense (Tables 1-2 and Figures ). In both cases, we observed that the timescale of carrier dynamics (τR) increases with increasing diffusion time constant (τD) in conventional FCS and scanning time (τS) in sFCS (Tables ).