(Invited) Thermoexcitonic Properties of Carbon Nanotubes

Abstract

Single-walled carbon nanotubes (SWCNTs) are representative low dimensional nanomaterials showing various intriguing excitonic properties [1-7]. Owing to the large binding energy of quasi one-dimensional excitons on the order of 0.3-0.5 eV, many of the excitonic phenomena can be observed even at elevated temperatures, which is opening up unprecedented applications of excitons in energy science and thermal engineering. I will discuss our recent progress in the studies on the excitonic thermal light emission properties of SWCNTs and their application in heat-to-light energy conversion devices. [1] Y. Miyauchi et al., Nat. Photonics 7, 715 (2013). [2] N. Akizuki, Y. Miyauchi et al., Nat. Commun. 6, 8920 (2015). [3] Y. Miyauchi et al., Phys. Rev. B, 92, 205407(2015). [4] A. Takakura, Y. Miyauchi et al., Nat. Commun. 10, 3040 (2019). [5] T. Nishihara, Y. Miyauchi et al., Nat. Commun. 9, 3144 (2018). [6] S. Konabe, T. Nishihara, Y. Miyauchi, Opt. Lett. 46, 3021 (2021). [7] T. Nishihara, Y. Miyauchi et al., submitted.