Question:
The intrinsic carrier concentration of silicon sample at $ 300\, K $ is $ 1.5 \times 10^{16}\, m^{-3} $ . What is the density of minority carrier ? (after doping, the number of majority carriers is $ 5 \times 10^{20}\, m^{-3} $ )
The intrinsic carrier concentration of silicon sample at $ 300\, K $ is $ 1.5 \times 10^{16}\, m^{-3} $ . What is the density of minority carrier ? (after doping, the number of majority carriers is $ 5 \times 10^{20}\, m^{-3} $ )
Updated On: Jun 2, 2024
- $ 4.5 \times 10^{11}\,m^{-3} $
- $ 3.3 \times 10^{4}\,m^{-3} $
- $ 5 \times 10^{20}\,m^{-3} $
- $ 3 \times 10^{-5}\,m^{-3} $
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
$n_{i}=1.5\times10^{16} m^{-3}; $
$n_{o}=5\times10^{20} m^{-3}$
$p_{o}=\frac{n_{i}^{2}}{n_{o}}=\frac{\left(1.5\times10^{16}m^{-3}\right)^{2}}{5\times10^{20} m^{-3}}$
$=4.5\times10^{11} m^{-3}$
$n_{o}=5\times10^{20} m^{-3}$
$p_{o}=\frac{n_{i}^{2}}{n_{o}}=\frac{\left(1.5\times10^{16}m^{-3}\right)^{2}}{5\times10^{20} m^{-3}}$
$=4.5\times10^{11} m^{-3}$
Was this answer helpful?
0
0
Top Questions on Semiconductor electronics: materials, devices and simple circuits
The I-V characteristics shown above are exhibited by a:- NEET (UG) - 2024
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660 nm. The band gap of the photodiode is found to be \[\frac{X}{8} \, \text{eV}.\]The value of $X$ is:\text{(Given, $h = 6.6 \times 10^{-34} \, \text{Js}$, $e = 1.6 \times 10^{-19} \, \text{C}$)}
- JEE Main - 2024
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- To measure the temperature coefficient of resistivity $\alpha$ of a semiconductor, an electrical arrangement shown in the figure is prepared. The arm BC is made up of the semiconductor. The experiment is being conducted at $25^\circ \text{C}$ and the resistance of the semiconductor arm is $3 \, \text{m}\Omega$. Arm BC is cooled at a constant rate of $2^\circ \text{C/s}$. If the galvanometer G shows no deflection after 10 s, then $\alpha$ is:
- JEE Main - 2024
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- The acceptor level of a p-type semiconductor is 6eV. The maximum wavelength of light which can create a hole would be : Given hc = 1242 eV nm.
- JEE Main - 2024
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode :
- JEE Main - 2024
- Physics
- Semiconductor electronics: materials, devices and simple circuits
View More Questions
Questions Asked in JKCET exam
- A moving block having mass $m$, collides with another stationary block having mass $4\,m$. The lighter block comes to rest after collision. When the initial velocity of the lighter block is $v$, then the value of coefficient of restitution (e) will be
- JKCET - 2019
- work, energy and power
- A force $ F = 3x^2 + 2x + 1 $ acts on a body in the $ x $ -direction. The work done by this force during a displacement from $ x = -1 $ to $ +1 $ is
- JKCET - 2019
- work, energy and power
- What is the colour of the flame on heating potassium in the flame of a Bunsen burner?
- JKCET - 2019
- GROUP 1 ELEMENTS
- If $ a $ , $ b $ , $ c $ are the lengths of three edges of unit cell, $ \alpha $ is the angle between side $ b $ and $ c $ , $ \beta $ is the angle between side $ a $ and $ c $ and $ \gamma $ is the angle between side $ a $ and $ b $ , what is the Bravais Lattice dimensions of a tetragonal crystal?
- JKCET - 2019
- The solid state
- Which of the following compounds is known as copper glance?
- JKCET - 2019
- General Principles and Processes of Isolation of Elements
View More Questions
Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.