This dataset contains absorbance, photoluminescence (PL) quantum yield (QY), and time-resolved PL (TR PL) data used in the associated publication. The data correspond to oleic-acid capped InP/ZnS core/shell quantum dots (QDs) of three emission colors: QD-G (green), QD-O (orange), and QD-R (red). All data are organized into separate folders by sample type and measurement category. Abs Contains three folders corresponding to QD-G, QD-O, and QD-R samples. File names include the sample label and relative mass concentration (6.25%–100%). If applicable, the cuvette path length 1 mm is indicated in the file name; otherwise, 5 mm cuvettes were used. PL QY PL QY data are provided for colloidal samples QD-G and QD-O. The folder “QD-G [polymers]” contains data for QD-G mixed with PMMA or PDMS polymers. File name format: [Sample or Ref]_[Concentration]_[spect.position]_[exposure time]_[excitation wavelength]_[filter used]_[window center] Field definitions: [Sample or Ref]: sample label or Ref (reference toluene cuvette) [Concentration]: relative mass concentration (6.25%–100%) [spect.position]: abs (absorption) or em (emission) [exposure time]: integration time (s) [excitation wavelength]: always 405 nm [filter used]: od1 (neutral density filter 1) or air (no filter) [window center]: spectral window center (nm) Carrection files: Int.sphere sensitivity curve.txt — spectrometer sensitivity function ND10 filter transmittance.txt — optical density filter transmittance TR PL TR PL data are provided for QD-O and QD-R samples. Spectrally integrated decays (intensity vs. time for varying concentration) are stored in: QD-O Spec.integrated (3 lines) vs concentration.txt QD-R Spec.integrated (3 lines) vs concentration.txt For QD-O, spectrally resolved decays (intensity vs. time for different emission wavelengths) are in: QD-O Spec.resolved (Wavelength scan).txt Folder “QD-O 3 regions” contains PL transients from three emission ranges: 510–580 nm, 586–620 nm, and 620–800 nm.Each file includes PL decays recorded at multiple sample concentrations (listed in the column headers).