The value of po in a silicon semiconductor at T = 300K is 6.0 X 1015 cm-3. Determine EF - Ev EF-Ev= 0.183 eV EF - Ev = 0.179 eV EF - Ev= 0.071 eV EF - Ev= 0.193 eV

For the diode circuit shown below, indicate the ON/OFF condition for all the diodes given VA and VB values. Calculate Vout, Vx and all the currents that flow through the diodes. Summarize your result using a table. +4V VA VB VA OV OV 4V D₁ D₂ X 5ΚΩ D3 VB OV 4V 4V -2V 5ΚΩ VOUT

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Light-emitting diodes (LEDs) are diodes made with III-V compound semiconductor materials such as aluminum gallium arsenide (AlGaAs), aluminum indium gallium phosphide (AllnGaP) or indium gallium nitride (InGaN), instead of silicon. The LEDs emit light when the device is operated under forward bias. LEDs of different colors have different turn-on voltages VD(on). For example: Color VD(on) Red ~ 1.6 V Yellow ~ 1.7 V (a) Model these five LEDs with a simplified piecewise linear model. (b) A rule of thumb is that it takes about 1 mA of current to "light" an LED while~ 10 mA is needed for it to appear bright. Use the piecewise linear model for the LEDs, for the over-voltage indicator circuit to the right, find the values of Vin which will cause D₁ or D₂ to light (i.e. when ID1 or ID2 exceeds 1 mA). Green ~ 1.8 V Blue ~ 2.8 V loks o mu Vin Red LED Red LED White ~ 3.8 V + lov 21 D₁ D2 -10V o t Vout 오

what is the voltage across the diode? what is the current through the diode? what is the current through the 100 ohm in series with the 3V? what is the current through the 5V line?

Find Dn for doped silicon using: un = 1250 cm2/V.s and up = 380 cm2/V.s. Assume T=300k 32.38 cm/s 32.38cm2/s 9,84 cm2/s 9.84 cm/s