Abstract
Because of the large binding energy of one-dimensional excitons on the order of 0.5 eV, excitons are stable in semiconducting single-walled carbon nanotubes (SWNTs) even at high temperatures more than 1000 K. This unique exciton property, with the very high intrinsic thermal stability of the materials, enables thermal generation of excitons in semiconducting SWNTs; this results in thermal radiation with very narrow spectral bandwidth even at 1000-2000 K [1]. We will report our recent progress in the study on the thermal exciton radiation from SWNTs. [1] T. Nishihara, A. Takakura, Y. Miyauchi, and K. Itami, Nat. Commun. 9, 3144 (2018).
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