Fig. 1 | Nature Communications

Fig. 1

From: Ultra-narrow-band near-infrared thermal exciton radiation in intrinsic one-dimensional semiconductors

Fig. 1

Optoelectronic characteristics of the one-dimensional system. a Electronic density of states (DOS) in a bulk solid and an atom. The white horizontal line and the vertical arrows indicate the Fermi energy and radiative transitions, respectively. The blue shading indicates the thermal distribution of electrons. b Typical thermal radiation characteristics of a bulk solid (blue) and an atom (red). c Electronic DOS in an one-dimensional (1D) semiconductor. d Schematic of the oscillator strength distribution of 1D systems in excitonic picture (red) or single-particle (band-to-band) picture (blue). The band edges are drawn aligned schematically for comparison. The inset shows a single-walled carbon nanotube as a representative quasi-1D system

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