Synthesis of Bi2Se3 and its application to sensitive and fast THz detection

Chao Tang, Koichi Tamura, Aoi Hamada, Hiroyoshi Kudo, Shinnosuke Uchigasaki, Yuma Takida, Hiroaki Minamide, Hirokazu Fukidome, Tsung Tse Lin, Akira Satou, Taiichi Otsuji

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study presents advancements in the synthesis and application of Bi2Se3 a topological van der Waals crystal, for terahertz (THz) detection. High-quality β-Bi2Se3 crystals were synthesized using the selenium vapor-induced supersaturated solution method (SVI-SSM), ensuring stoichiometric integrity. Heterostructures of Bi2Se3 were constructed using hot transfer methods, leading to the fabrication of a rectenna THz detector. Utilizing a 0.95-THz injection-seeded THz parametric generator (is-TPG) as the light source for pulsed-continuous wave (CW) THz waves, THz detection experiments were conducted. The results demonstrated a fast response time of 200 ps and a sensitivity of 40 mV/W with the THz detector, which was maintained even under zero bias conditions. These findings lay the foundation for developing passive THz detection systems with minimal energy consufmption, holding significant promise for advancing THz communication technology.

Original languageEnglish
Title of host publicationTerahertz Emitters, Receivers, and Applications XV
EditorsManijeh Razeghi, Mona Jarrahi
PublisherSPIE
ISBN (Electronic)9781510679429
DOIs
Publication statusPublished - 2024
EventTerahertz Emitters, Receivers, and Applications XV 2024 - San Diego, United States
Duration: 2024 Aug 182024 Aug 19

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13141
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceTerahertz Emitters, Receivers, and Applications XV 2024
Country/TerritoryUnited States
CitySan Diego
Period24/8/1824/8/19

Keywords

  • 2D material
  • Bi2Se3
  • Heterostructure
  • Passive sensing
  • THz detection

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