Dirac Surface-State Driven Broad Spectral Band Low Quantum Energy Photoresponse in Quaternary Topological BiSbSe2Te
Abstract
2D topological materials are garnering significant interest for their potential in optoelectronic applications, particularly due to their unique quantum transport properties and exceptional optical characteristics. In this work, quaternary topological BiSbSe2Te with stoichiometry modulation from Bi2Se3 are synthesized and demonstrates a broad spectral band photoresponse, ranging from infrared to terahertz and to millimeter waves, with a particular excellence on detection of low quantum energy photons. The observed photoresponse is attributed to the excitation of plasmonic nonequilibrium electrons originating from the topological Dirac surface states inherent in the BiSbSe2Te. The detector exhibits remarkable performance, achieving a responsivity of 8174 V/W and a noise equivalent power of 4.7 × 10- 1 3 W/Hz1/2 at 0.094 THz, with a wide low quantum energy terahertz and millimeter wave photoresponse spanning from 0.032 to 0.173 THz. The study underscores the potential of Dirac surface-state driven photoresponse in BiSbSe2Te, paving the way for the development of sensitive, broad spectral band and room-temperature low quantum energy photodetectors, which are highly pursued for a variety of applications.
Read the paper
Related studies
- Chaos and quantum thermalization
- The Dalton quantum chemistry program system
- Cord Blood Leptin and Adiponectin as Predictors of Adiposity in Children at 3 Years of Age: A Prospective Cohort Study
- Quantitative metabolomics by H-NMR and LC-MS/MS confirms altered metabolic pathways in diabetes
- Stable adiabatic quantum batteries
- A novel self-lipid antigen targets human T cells against CD1c(+) leukemias
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.