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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: RETRACTED ARTICLE: Enhanced Emission of Quantum System in Si-Ge Nanolayer Structure

Fig. 4

a PL spectra on the Si-Ge nanolayers (composition: 2(Si)/1(Ge)) in the (100) direction measured under the 488-nm excitation by using PL Systems at 17 K, in which the intensity of emission peak near 1150 nm super-linearly increases with pumping power; as shown in the inset, the evolution curve of the emission intensity at 1154 nm is increasing with pumping power super-linearly. b Evolution of PL peaks at different temperature with pumping power of 1 W

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