Question
Calculate the temperature at which the number of electrons in the conduction band of a semiconductor is four times the number at room temperature. Take the band gap energy to be
Answer :
Word Count : 310
Let's solve this step by step manually. We are asked to find the temperature $T$ at which the number of electrons in the conduction band $n$ is 4 times the number at room temperature ($T_0 = 300\ \text{K}$), given: * Band gap $E_g = 1.2\ \text{eV}$ * $E_C - E_F = E_G$ --- ### Step 1: Use the expression for intrinsic carrier concentration For a semiconductor: $$ n \propto e^{-\frac{E_g}{2 k_B T}} $$ where: * $k_B = __________ __________ ______ ____ __________ ____ ___.
___ ________ _________ ________ ___ ____ _________.
___ ___ _______ _________ ______ _____ _______.
__________ __________ ______ _______ ______ _____ ______ _________ _________ _________ _______ __________.
_____ _________ ______ ________ ____ __________ ____ ________ ___ _____ _____.
_________ _____ ______ ________ ________ _________ _______ _______ ____.
_________ _________ _________ _____ ___ ________ ____ ____ _________ _______.
_______ ________ _______ ___ ___.
____ _________ ________ ____ ___ ________ _______ ______ ________ __________.
_______ ________ ___ _____ _______ ______ ___ _________ _________ _____.
___ _______ __________ ________ ________ ________ ___ ____.
_______ ___ ___ ______ ______ __________.
____ _____ _______ __________ ______ ______ ________ _________.
___ ____ ________ _______ ______ _____ _______ __________ ___.
______ _______ ________ ____ ____ ___ _______ _________ ______.
________ ______ _________ _______ ____ ___ ____ _______ _______ ___ _____ ______.
________ ___ ___ ______ ___ ________ ______ _____ _________ ____ _____.
________ _____ ___ _______ ________ ________ _________ _______ ________ ______ ______ ____.
______ ________ ___ _________ _______ __________ _____ ________ ________ ________.
_______ ___ ______ ____ ____ _____ _____ ______ ______ ______ ____ ______.
___ _______ _______ ___ ____.
_________ ______ _________ _____ __________ ____ _____.
______ _______ ________ _______ ______.
____ __________ __________ _________ _______ _____ ______.
______ __________ _____ ______ _________ __________ _________ ____ ______ __________ ________ _________.
_______ ______ ___ ____ ________ _______.
_____ ___ ________ __________ __________ ___.
Get Full Answer on WhatsApp
Let's solve this step by step manually. We are asked to find the temperature $T$ at which the number of electrons in the conduction band $n$ is 4 times the number at room temperature ($T_0 = 300\ \text{K}$), given: * Band gap $E_g = 1.2\ \text{eV}$ * $E_C - E_F = E_G$ --- ### Step 1: Use the expression for intrinsic carrier concentration For a semiconductor: $$ n \propto e^{-\frac{E_g}{2 k_B T}} $$ where: * $k_B = __________ __________ ______ ____ __________ ____ ___.
___ ________ _________ ________ ___ ____ _________.
___ ___ _______ _________ ______ _____ _______.
__________ __________ ______ _______ ______ _____ ______ _________ _________ _________ _______ __________.
_____ _________ ______ ________ ____ __________ ____ ________ ___ _____ _____.
_________ _____ ______ ________ ________ _________ _______ _______ ____.
_________ _________ _________ _____ ___ ________ ____ ____ _________ _______.
_______ ________ _______ ___ ___.
____ _________ ________ ____ ___ ________ _______ ______ ________ __________.
_______ ________ ___ _____ _______ ______ ___ _________ _________ _____.
___ _______ __________ ________ ________ ________ ___ ____.
_______ ___ ___ ______ ______ __________.
____ _____ _______ __________ ______ ______ ________ _________.
___ ____ ________ _______ ______ _____ _______ __________ ___.
______ _______ ________ ____ ____ ___ _______ _________ ______.
________ ______ _________ _______ ____ ___ ____ _______ _______ ___ _____ ______.
________ ___ ___ ______ ___ ________ ______ _____ _________ ____ _____.
________ _____ ___ _______ ________ ________ _________ _______ ________ ______ ______ ____.
______ ________ ___ _________ _______ __________ _____ ________ ________ ________.
_______ ___ ______ ____ ____ _____ _____ ______ ______ ______ ____ ______.
___ _______ _______ ___ ____.
_________ ______ _________ _____ __________ ____ _____.
______ _______ ________ _______ ______.
____ __________ __________ _________ _______ _____ ______.
______ __________ _____ ______ _________ __________ _________ ____ ______ __________ ________ _________.
_______ ______ ___ ____ ________ _______.
_____ ___ ________ __________ __________ ___.
Get Full Answer on WhatsApp
IGNOU NEWS
Assignment Submission Last Date Extended Till 30 June 2026 Click Here★★★IGNOU June 2026 TEE Date Sheet Released Click Here★★★