Fig. 5: Characterization of the spectral light intensity of a white LED by DDAO-mediated measurement.
a, Emission spectrum of the white LED normalized by its integral (solid line), absorbance spectrum of DDAO normalized at 470 nm (dashed line). b, Action spectrum of the white LED on DDAO. c, Dependence of the integral light intensity SI emitted by the white LED on the input currents as measured with spectral transfer of DDAO fluorescence intensity (mean value ± s.d., s.d. are propagated from the error on σ(470) (20 repeats)). d, Incident spectral light intensity I(λ) of the white LED fed with 277 mA current as retrieved with DDAO (SI = 1.4 mE m−2 s−1) (text and Supplementary Table 1).
