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Semiconductor device — bands, carriers and measurement

Relate a conceptual device structure to band alignment, carrier transport and terminal measurements. Contact resistance and thermal effects must be separated from intrinsic device behaviour before interpreting a curve.

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{
  "nodes": [
    { "id": "str", "type": "rounded", "label": "Material stack and geometry", "x": 40, "y": 200, "width": 150, "height": 104, "fill": "#ede9fe", "stroke": "#6d28d9" },
    { "id": "band", "type": "rounded", "label": "Band alignment", "x": 215, "y": 200, "width": 150, "height": 104, "fill": "#fef3c7", "stroke": "#b45309" },
    { "id": "bias", "type": "rounded", "label": "Applied terminal bias", "x": 215, "y": 520, "width": 150, "height": 104, "fill": "#ede9fe", "stroke": "#6d28d9" },
    { "id": "car", "type": "rounded", "label": "Carrier distribution", "x": 390, "y": 200, "width": 150, "height": 104, "fill": "#fef3c7", "stroke": "#b45309" },
    { "id": "trans", "type": "rounded", "label": "Transport / recombination", "x": 565, "y": 200, "width": 150, "height": 104, "fill": "#fef3c7", "stroke": "#b45309" },
    { "id": "cont", "type": "octagon", "label": "Contact resistance", "x": 565, "y": 520, "width": 150, "height": 104, "fill": "#e0f2fe", "stroke": "#0369a1" },
    { "id": "heat", "type": "rounded", "label": "Thermal effects", "x": 740, "y": 520, "width": 150, "height": 104, "fill": "#fee2e2", "stroke": "#b91c1c" },
    { "id": "iv", "type": "card", "label": "Current–voltage measurement", "x": 740, "y": 200, "width": 150, "height": 104, "fill": "#ccfbf1", "stroke": "#0f766e" },
    { "id": "mod", "type": "rounded", "label": "Model and residual comparison", "x": 915, "y": 200, "width": 150, "height": 104, "fill": "#fce7f3", "stroke": "#be185d" }
  ],
  "edges": [
    { "id": "e0", "source": "str", "target": "band", "label": "energy landscape" },
    { "id": "e1", "source": "band", "target": "car", "label": "occupation" },
    { "id": "e2", "source": "bias", "target": "car", "label": "perturbation" },
    { "id": "e3", "source": "car", "target": "trans", "label": "motion and loss" },
    { "id": "e4", "source": "trans", "target": "iv", "label": "terminal response" },
    { "id": "e5", "source": "cont", "target": "iv", "label": "series effects", "style": "dashed" },
    { "id": "e6", "source": "heat", "target": "iv", "label": "temperature dependence", "style": "dashed" },
    { "id": "e7", "source": "iv", "target": "mod", "label": "fit within regime" }
  ]
}