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<p>Nanomaterials with outstanding thermoelectric and sensing properties have great potential across related thermoelectricity applications and sequencing technologies, leading to the next generation of high-efficiency nanoscale devices. In the present research, a novel field-effect Schottky barrier transistor (FESBT) is introduced using monoelemental (<i>X</i>-enes) nanoribbons (NRs) such as silicene and germanene containing alternative electroburnt (EB) and nanopore (NP) defects. Moreover, we analyze the FESBT prospect for thermoelectricity applications when it is composed of armchair nanoribbons of statnene (ASnNR), arsenene&#xa0;(AAsNR), antimonene&#xa0;(ASbNR), and bismuthene&#xa0;(ABiNR) with a defect-induced nanohole (NH) on the hexagonal form of boron nitride (h-BN) substrate. Computational analysis of thermo-dependent electrical spectrums is one of the interesting steps in this study, since it has not been performed until now. The formulations developed for thermoelectric characteristics were obtained on the basis of a transmission analytical model. In order to evaluate the accuracy of the proposed computational models, a comparative study was carried out with density functional theory (DFT) simulation-based results. The&#xa0;performance of the device was investigated for different ribbon widths, number of dimer lines, and edge shapes, and the impacts of normalized Fermi energy, bias voltage, temperature, carrier concentration, SB height, and different defect states were highlighted. To demonstrate the potential of the proposed FESBT as a biosensor for biomolecules sequencing, DNA nucleobases approach the sensor’s surface and the proximity of nucleobases leads to increasing values of thermoelectric characteristics. In addition, the current–voltage characteristic changes significantly compared with the full-scale EB configuration when nucleobases are transported through the anthracene as an anchor.</p>

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Quantum-Interference-Enhanced Thermoelectricity Performance of Armchair X-ene (X = Si, Ge, Sn, As, Sb, Bi) NR-Based FESBTs as a Potential Sensing Mechanism for DNA Nucleobases Considering Electroburnt and Nanopore Defects

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • Komeil Rahmani,
  • Saeed Mohammadi

摘要

Nanomaterials with outstanding thermoelectric and sensing properties have great potential across related thermoelectricity applications and sequencing technologies, leading to the next generation of high-efficiency nanoscale devices. In the present research, a novel field-effect Schottky barrier transistor (FESBT) is introduced using monoelemental (X-enes) nanoribbons (NRs) such as silicene and germanene containing alternative electroburnt (EB) and nanopore (NP) defects. Moreover, we analyze the FESBT prospect for thermoelectricity applications when it is composed of armchair nanoribbons of statnene (ASnNR), arsenene (AAsNR), antimonene (ASbNR), and bismuthene (ABiNR) with a defect-induced nanohole (NH) on the hexagonal form of boron nitride (h-BN) substrate. Computational analysis of thermo-dependent electrical spectrums is one of the interesting steps in this study, since it has not been performed until now. The formulations developed for thermoelectric characteristics were obtained on the basis of a transmission analytical model. In order to evaluate the accuracy of the proposed computational models, a comparative study was carried out with density functional theory (DFT) simulation-based results. The performance of the device was investigated for different ribbon widths, number of dimer lines, and edge shapes, and the impacts of normalized Fermi energy, bias voltage, temperature, carrier concentration, SB height, and different defect states were highlighted. To demonstrate the potential of the proposed FESBT as a biosensor for biomolecules sequencing, DNA nucleobases approach the sensor’s surface and the proximity of nucleobases leads to increasing values of thermoelectric characteristics. In addition, the current–voltage characteristic changes significantly compared with the full-scale EB configuration when nucleobases are transported through the anthracene as an anchor.