Excitation Density Dependence of Optical Oxygen Sensing in Poly(9,9-dioctylfluorene) Waveguides Showing Amplified Spontaneous Emission

<table>Excitation density dependence of the PL spectra measured in air, showing a clear intensity reduction with respect to the spectra in vacuum at the same excitation density.</table>

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Figure 2

Figure 2: Excitation Density Dependence of Optical Oxygen Sensing in Poly(9,9-dioctylfluorene) Waveguides Showing Amplified Spontaneous Emission 