Class 12 Exam > Class 12 Questions > Depletion region (space charge) is formed bec... Start Learning for Free
Depletion region (space charge) is formed because
- a)majority carriers while diffusing to the other side leave behind immobile ionized atoms
- b)majority carriers while drifting to the other side leave behind immobile ionized atoms
- c)majority carriers while diffusing to the other side leave behind highly mobile ionized atoms
- d)minority carriers while diffusing to the other side leave behind immobile ionized atoms
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Depletion region (space charge) is formed becausea)majority carriers w...
Explanation:The depletion region, also called depletion layer, depletion zone, junction region, space charge region or space charge layer, is an insulating region within a conductive, doped semiconductor material where the mobile charge carriers have been diffused away, or have been forced away by an electric field. The only elements left in the depletion region are ionized donor or acceptor impurities.The depletion region is so named because it is formed from a conducting region by removal of all free charge carriers, leaving none to carry a current.
Most Upvoted Answer
Depletion region (space charge) is formed becausea)majority carriers w...
Depletion region (space charge) is formed because majority carriers while diffusing to the other side leave behind immobile ionized atoms.
Explanation:
The depletion region, also known as the space charge region, is a region within a semiconductor device where there are no mobile charge carriers. This region is formed as a result of the movement of majority carriers (electrons in N-type material and holes in P-type material) across the junction between the N and P-type regions of a semiconductor.
When a P-N junction is formed, the N-type region has an excess of electrons and the P-type region has a deficit of electrons (excess of holes). When the two regions are brought together, the majority carriers (electrons or holes) will start to diffuse across the junction due to the concentration gradient. However, as they move across the junction, they will encounter dopant atoms of the opposite type (N-type carriers encountering P-type dopants and vice versa).
The majority carriers that diffuse across the junction will either recombine with the majority carriers of the opposite type or they will ionize the dopant atoms. In the case of ionization, the majority carriers will give up their energy to the dopant atoms, causing them to become immobile ions. These immobile ions create a region within the semiconductor where there are no mobile charge carriers, known as the depletion region.
The depletion region is characterized by a fixed electric field, which acts as a barrier to the flow of majority carriers. This creates a potential difference across the junction, known as the built-in potential. The presence of the depletion region and the built-in potential are essential for the functioning of semiconductor devices such as diodes and transistors.
In summary, the depletion region is formed because majority carriers, while diffusing to the other side of a P-N junction, leave behind immobile ionized atoms. These immobile ions create a region within the semiconductor where there are no mobile charge carriers, resulting in the formation of the depletion region.
Explanation:
The depletion region, also known as the space charge region, is a region within a semiconductor device where there are no mobile charge carriers. This region is formed as a result of the movement of majority carriers (electrons in N-type material and holes in P-type material) across the junction between the N and P-type regions of a semiconductor.
When a P-N junction is formed, the N-type region has an excess of electrons and the P-type region has a deficit of electrons (excess of holes). When the two regions are brought together, the majority carriers (electrons or holes) will start to diffuse across the junction due to the concentration gradient. However, as they move across the junction, they will encounter dopant atoms of the opposite type (N-type carriers encountering P-type dopants and vice versa).
The majority carriers that diffuse across the junction will either recombine with the majority carriers of the opposite type or they will ionize the dopant atoms. In the case of ionization, the majority carriers will give up their energy to the dopant atoms, causing them to become immobile ions. These immobile ions create a region within the semiconductor where there are no mobile charge carriers, known as the depletion region.
The depletion region is characterized by a fixed electric field, which acts as a barrier to the flow of majority carriers. This creates a potential difference across the junction, known as the built-in potential. The presence of the depletion region and the built-in potential are essential for the functioning of semiconductor devices such as diodes and transistors.
In summary, the depletion region is formed because majority carriers, while diffusing to the other side of a P-N junction, leave behind immobile ionized atoms. These immobile ions create a region within the semiconductor where there are no mobile charge carriers, resulting in the formation of the depletion region.
 | Explore Courses for Class 12 exam |  |
Top Courses for Class 12View all
Top Courses for Class 12
Question Description
Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? for Class 12 2026 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer?.
Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? for Class 12 2026 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Depletion region (space charge) is formed becausea)majority carriers while diffusing to the other side leave behind immobile ionized atomsb)majority carriers while drifting to the other side leave behind immobile ionized atomsc)majority carriers while diffusing to the other side leave behind highly mobile ionized atomsd)minority carriers while diffusing to the other side leave behind immobile ionized atomsCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
| Explore Courses for Class 12 exam | |
Top Courses for Class 12
Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
