Fig. 6: Amplified spontaneous emission (ASE) characteristics of AM03 and BD12 doped in 4,4’-bis(carbazol-9-yl)biphenyl (CBP) thin films. | Nature Communications

Fig. 6: Amplified spontaneous emission (ASE) characteristics of AM03 and BD12 doped in 4,4’-bis(carbazol-9-yl)biphenyl (CBP) thin films.

From: Discovery of tunable and soluble organic emitters for solid-state lasers with a self-driving laboratory

Fig. 6: Amplified spontaneous emission (ASE) characteristics of AM03 and BD12 doped in 4,4’-bis(carbazol-9-yl)biphenyl (CBP) thin films.The alternative text for this image may have been generated using AI.

a, c Photoluminescence (PL) intensity and full-width at half-maximum (FWHM) as a function of excitation intensity for AM03:CBP (1 wt%) and BD12:CBP (5 wt%), respectively. The dashed lines indicate linear fits applied separately to the sub-threshold and above-threshold regimes, with the former obtained from linear scaling of emission intensity and the latter from a linear fit to the log–log representation of the data. The ASE threshold is determined as the intersection point of these two fitted lines. b, d Evolution of ASE spectra with increasing pump intensity, showing spectral narrowing and threshold behavior for each system. Source data are provided as a SourceData file.

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