A measured diode's forward characteristic gives at and at

PHYSICS · Subjective · Fermi University Physics · Condensed Matter, Materials & Soft Matter · Semiconductor physics and devices · Semiconductor physics and devices

Condensed Matter Physics, Ch The junction: diodes, transistors, lamps and solar cells

Problem

A measured diode's forward characteristic gives

I=2.70\times10^{-6}\,\mathrm{A}

V=0.40\,\mathrm{V}

and

I=2.32\times10^{-5}\,\mathrm{A}

V=0.50\,\mathrm{V}

, at

300\,\mathrm{K}

. Treating

\ln I

as a straight line of slope

e/(\eta_{\rm id}k_BT)

between these two points, find the ideality factor

\eta_{\rm id}

and the saturation current

I_0

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