Now showing 1 - 2 of 2
  • Publication
    Graphene self-switching diode-based thermoelectric rectifier
    ( 2020-09-30)
    Kaushal B.
    ;
    Garg S.
    ;
    Prakash K.
    ;
    ;
    Kumar S.
    ;
    Gupta N.
    ;
    Singh A.K.
    This Letter demonstrates thermoelectric rectification in graphene self-switching diode (GSSD) on SiO2/Si substrate. Nanometre-scale nonlinear semiconductor device, called self-switching diode (SSD), has been utilised. Applied bias leads to a change in potential profile and effective channel width of GSSD resulting in diode like I-V characteristics. The excellent electronic properties of graphene potentially make it suitable for producing SSD's with high responsivity and low noise equivalent power (NEP). The designed GSSD demonstrates a high Seebeck coefficient (S) of 200 μV/K, voltage detection sensitivity, and NEP of 97.964 V/W and 0.6064 nW/Hz1/2, respectively. Furthermore, the effect of applying backgate voltage on the Seebeck coefficient has also been demonstrated in this work. The GSSD is presented as a potential thermoelectric rectifier, which can convert the thermal energy into useful electrical energy.
      3  20
  • Publication
    MoS2 Self-Switching Diode-Based Low Power Single and Three-Phase Bridge Rectifiers
    ( 2024-01-01)
    Garg S.
    ;
    Sharma B.
    ;
    Khanal G.M.
    ;
    Kumar S.
    ;
    Neena Gupta
    ;
    ;
    Song A.
    ;
    Singh A.K.
    This work presents the molybdenum di-sulphide three-phase bridge rectifier integrated circuit utilizing the novel self-switching diode. The self-switching diode has a planar architecture having I-V behavior similar to an ideal diode. The structure of SSD is utilized to design single phase and three phase rectifiers. The performance in terms of rectification efficiency, total harmonic distortion, ripple factor and cut-off frequency has been evaluated and compared for both single and three phase SSDBR. The three-phase self-switching diode bridge rectifier (3P-SSDBR) has a cut-off frequency of ∼400 MHz with minimum total harmonic distortion (THD) and ripple factor (RF) of 4.73% and 0.59, respectively. While, the single phase self-switching diode bridge rectifier (1P-SSDBR) has a cut-off frequency of ∼300 MHz with minimum total harmonic distortion (THD) and ripple factor (RF) of 47.86% and 1.94, respectively. Further, to validate the obtained results, the simulation models have been calibrated with experimental and theoretical findings.
      5  21