Photoinduced dynamics during electronic transfer from narrow to wide bandgap layers in one-dimensional heterostructured materials

Yuri Saida, Thomas Gauthier, Hiroo Suzuki (), Satoshi Ohmura (), Ryo Shikata, Yui Iwasaki, Godai Noyama, Misaki Kishibuchi, Yuichiro Tanaka, Wataru Yajima, Nicolas Godin, Gaël Privault, Tomoharu Tokunaga, Shota Ono, Shin-ya Koshihara, Kenji Tsuruta, Yasuhiko Hayashi, Roman Bertoni () and Masaki Hada ()
Additional contact information
Yuri Saida: University of Tsukuba
Thomas Gauthier: IPR (Institut de Physique de Rennes)—UMR 6251
Hiroo Suzuki: Okayama University
Satoshi Ohmura: Hiroshima Institute of Technology
Ryo Shikata: University of Tsukuba
Yui Iwasaki: University of Tsukuba
Godai Noyama: University of Tsukuba
Misaki Kishibuchi: Okayama University
Yuichiro Tanaka: Okayama University
Wataru Yajima: University of Tsukuba
Nicolas Godin: IPR (Institut de Physique de Rennes)—UMR 6251
Gaël Privault: IPR (Institut de Physique de Rennes)—UMR 6251
Tomoharu Tokunaga: Nagoya University
Shota Ono: Tohoku University
Shin-ya Koshihara: Tokyo Institute of Technology
Kenji Tsuruta: Okayama University
Yasuhiko Hayashi: Okayama University
Roman Bertoni: IPR (Institut de Physique de Rennes)—UMR 6251
Masaki Hada: University of Tsukuba

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Electron transfer is a fundamental energy conversion process widely present in synthetic, industrial, and natural systems. Understanding the electron transfer process is important to exploit the uniqueness of the low-dimensional van der Waals (vdW) heterostructures because interlayer electron transfer produces the function of this class of material. Here, we show the occurrence of an electron transfer process in one-dimensional layer-stacking of carbon nanotubes (CNTs) and boron nitride nanotubes (BNNTs). This observation makes use of femtosecond broadband optical spectroscopy, ultrafast time-resolved electron diffraction, and first-principles theoretical calculations. These results reveal that near-ultraviolet photoexcitation induces an electron transfer from the conduction bands of CNT to BNNT layers via electronic decay channels. This physical process subsequently generates radial phonons in the one-dimensional vdW heterostructure material. The gathered insights unveil the fundamentals physics of interfacial interactions in low dimensional vdW heterostructures and their photoinduced dynamics, pushing their limits for photoactive multifunctional applications.

Date: 2024
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DOI: 10.1038/s41467-024-48880-3

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