3. A semiconductor of bar of length 8 µm and a cross- sectional area of 2 µm² is uniformly doped with donors with much higher concentration than the intrinsic concentration (10" cm³) such that ionized impurity scattering causes the majority carrier mobility to be a function of doping Np (cm³). (No acceptors or NA=0 cm³) ND |1020 cm- Hn = 800 cm²/V-s The electron drift current for an applied voltage of 160 V is 10 mA. (a) Calculate the doping concentration in the bar. (b) Calculate electron mobility due to ionized donor scattering. Hints: Convert um to cm Calculate electric filed, check if the sample is in the velocity saturation region. Calculate Ja (drift) =q nao (saturation velocity) Assume saturation velocity = 107 cm/s Calculate n0 = Np O Ei

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3. A semiconductor of bar of length 8 µm and a cross-
sectional area of 2 um2 is uniformly doped with donors
with much higher concentration than the intrinsic
concentration (101 cm³) such that ionized impurity
scattering causes the majority carrier mobility to be a
function of doping Np (cm).
(No acceptors or NA=0 cm³)
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ND
Un
= 800
cm?/V-s
1020ст-3
The electron drift current for an applied voltage of
160 V is 10 mA.
(a) Calculate the doping concentration in the bar.
(b) Calculate electron mobility due to ionized donor
scattering.
Hints:
Convert um to cm
Calculate electric filed, check if the sample is in the
velocity saturation region.
Calculate Jn (drift) =q nno (saturation velocity)
Assume saturation velocity = 10’ cm/s
Calculate nno = ND
12:00 AM
Type here to search
23°C
W
08-Mar-22
---
II
Transcribed Image Text:I Homework 5 03042022.docx.pdf - Adobe Reader File Edit View Window Help | 4 77.3% Tools Fill & Sign Comment Оpen 3 T Sign In • Export PDF • Create PDF v Edit PDF 3. A semiconductor of bar of length 8 µm and a cross- sectional area of 2 um2 is uniformly doped with donors with much higher concentration than the intrinsic concentration (101 cm³) such that ionized impurity scattering causes the majority carrier mobility to be a function of doping Np (cm). (No acceptors or NA=0 cm³) Adobe Acrobat Pro Easily edit text and images in PDF documents Start Now • Combine PDF • Send Files • Store Files ND Un = 800 cm?/V-s 1020ст-3 The electron drift current for an applied voltage of 160 V is 10 mA. (a) Calculate the doping concentration in the bar. (b) Calculate electron mobility due to ionized donor scattering. Hints: Convert um to cm Calculate electric filed, check if the sample is in the velocity saturation region. Calculate Jn (drift) =q nno (saturation velocity) Assume saturation velocity = 10’ cm/s Calculate nno = ND 12:00 AM Type here to search 23°C W 08-Mar-22 --- II
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