• Journal of Semiconductors
  • Vol. 41, Issue 6, 062601 (2020)
Shagun Pal and Brijesh Kumar
Author Affiliations
  • Department of Electronics and Communication Engineering, MMMUT Gorakhpur- 273010, India
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    DOI: 10.1088/1674-4926/41/6/062601 Cite this Article
    Shagun Pal, Brijesh Kumar. Mathematical analysis of organic-pass transistor using pseudo-p-OTFTs[J]. Journal of Semiconductors, 2020, 41(6): 062601 Copy Citation Text show less
    (Color online) Schematic representation of the bottom gate bottom contact organic thin film transistor.
    Fig. 1. (Color online) Schematic representation of the bottom gate bottom contact organic thin film transistor.
    (Color online) Schematic representation of the mixed mode analysis of ATLAS for circuit implementation.
    Fig. 2. (Color online) Schematic representation of the mixed mode analysis of ATLAS for circuit implementation.
    (Color online) Experimental[9] and simulated device results: (a) output and (b) transfer characteristics curve.
    Fig. 3. (Color online) Experimental[9] and simulated device results: (a) output and (b) transfer characteristics curve.
    (Color online) Transfer characteristics curve validity of simulated device through model[21] and experimental[9].
    Fig. 4. (Color online) Transfer characteristics curve validity of simulated device through model[21] and experimental[9].
    (Color online) (a) The basic circuitry for logic high organic-PT. (b) Variation of output voltage with respect to time through MATLAB. (c) Simulation result for the logic high signal with the input supply of 5 V.
    Fig. 5. (Color online) (a) The basic circuitry for logic high organic-PT. (b) Variation of output voltage with respect to time through MATLAB. (c) Simulation result for the logic high signal with the input supply of 5 V.
    (Color online) (a) The basic circuitry for logic low organic-PT. (b) working principle of the proposed model for logic low signal. (c) Variation of output voltage with respect to time through MAT Lab. (d) Simulation result for the logic low signal with the input supply of 5 V.
    Fig. 6. (Color online) (a) The basic circuitry for logic low organic-PT. (b) working principle of the proposed model for logic low signal. (c) Variation of output voltage with respect to time through MAT Lab. (d) Simulation result for the logic low signal with the input supply of 5 V.
    ParameterValue
    Gate electrode (Si)150 nm
    Bottom gate (SiO2), tox100 nm
    OSC thickness (tosc) (pentacene) 200 nm
    Width of S/D (ts/td) (gold) 80 nm
    Active layer length (L) 25 µm
    Active layer width (W) 800 µm
    Table 1. Device parameters for the organic material based device[9].
    ParameterExperiment[9]Simulated
    µ(cm2/(V·s)) 0.020.019
    Ion/Ioff3.2 × 1035.1 × 103
    SS (V/dec.)2.02.3
    gm (µS) 0.0440.041
    VTH(V) – 2.0– 2.1
    Table 2. Electrical parameter comparison of pentacene-based single gate organic thin film transistor.
    ParameterValue
    W/L800/25
    Cox0.345 × 10–9 F/cm2
    µ0.012 cm2/(V·s)
    γ2.1[21]
    To465 K[21]
    Vt–2.1 V
    Table 3. Fitting parameters for the transfer characteristics using the model through MATLAB[21].
    ParameterAnalyticalSimulated
    Output voltage (V)2.893
    Table 4. Comparison between analytical and simulation parameters for logic high transfer signal.
    ParameterValue
    W/L (T1) 5000 μm/100 μm
    W/L (T2) 300 μm/100 μm
    W/L (T3) 300 μm/100 μm
    W/L (T4) 5000 μm/100 μm
    W/L (T5) 300 μm/100 μm
    COLED0.6 nF
    Table 5. Dimensions for the simulated parameters of the proposed inverter design.
    ParameterAnalyticalSimulated
    Output voltage (V)0.0120.5
    Table 6. Comparison between analytical and simulation parameters for logic low transfer signal.
    Shagun Pal, Brijesh Kumar. Mathematical analysis of organic-pass transistor using pseudo-p-OTFTs[J]. Journal of Semiconductors, 2020, 41(6): 062601
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