What are Semiconductor Detectors?

Semiconductor detector is a nuclear detector that can detect particles like alpha particles, gamma radiation etc, but made from a semiconductor device like a pn junction diode.

Semiconductors are materials that have an intermediate band gap compared to metals and insulators.
A pn junction diode is made from a layer of n-type and p-type semiconductor. n-type semiconductors have majority charge carriers as electrons, and p-type has holes. It does not conduct in reverse bias. The pn junction diode in reverse bias, has a large depletion region, that acts as the detector.
When an external particle enters the depletion layer, it transfers energy and create large number of electron-hole pairs. Energy required to create electron-hole pair is usually around 3.5eV. The large number of electrons lead to a current pulse that s registered in some counter.

▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱
Support💖  / dibyajyotidas  
Donate🤝🏻https://paypal.me/FortheLoveofPhysics

Telegram - https://t.me/FortheLoveofPhysicsYT
▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱▱

Follow my other videos here...
••••••••••••••••••••••••••••••••••••••••••
NUCLEAR AND PARTICLE PHYSICS - Series :
••••••••••••••••••••••••••••••••••••••••••
1) What is Nuclear Physics? ►    • What is Nuclear Physics? (LECTURE SER...  
2) Nuclear Size / Radius ►    • Nuclear Size / Radius  
3) Quantization of Angular Momentum ►    • What is Quantization of Angular Momen...  
4) Nuclear Spin and Angular Momentum ►    • Nuclear Spin and Angular Momentum  
5) Nuclear Magnetic Moment ►    • Nuclear Magnetic Moment  
6) Binding Energy of Nucleus & BE Curve ►    • What is Nuclear Binding Energy? (and ...  
7) Parity of Wave function ►    • What is Parity of a Wave function? (O...  
8) Symmetric & Anti symmetric Wave func ►    • Symmetric and Anti-symmetric Wave fun...  
9) Liquid Drop Model of Nucleus ►    • Liquid Drop Model of Nucleus ( Bindin...  
10) Corrections to Liquid Drop Model ►    • Corrections to Liquid Drop Model / Se...  
11) NZ Graph (& Maximizing BE) ►    • What is NZ Graph? | Maximizing Bindin...  
12) Fermi Energy of Nucleus ►    • Fermi Energy of Nucleus (Derivation)  
13) Fermi Gas Model of Nucleus ►    • Fermi Gas Model of Nucleus  
14) Shell Model of Nucleus ►    • Shell Model of Nucleus  
15) Nature of (Strong) Nuclear Force) ►    • Nature of (Strong) Nuclear Force  
16) Alpha, Beta & Gamma Decay ►    • Alpha, Beta & Gamma Decay [Complete D...  
17) Gamow's Theory of Alpha Decay ►    • Gamow's Theory of Alpha Decay AND Gei...  
18) Gamow's Theory (DERIVATION) ►    • [DERIVATION ] Gamow's Theory of Alpha...  
19) Q Value and KE of Alpha Decay ►    • Q-Value | KE of Alpha Decay (Kinematics)  
20) Beta Decay & Neutrino Hypothesis ►    • Beta Decay & Neutrino Hypothesis !! (...  
21) Radioactive Decay Law ►    • What is Radioactive Decay? Half Life ...  
22) Nuclear Cross Section ►    • Nuclear Cross Section !!  
23) Interaction of Nuclear Radiation with Matter ►    • Interaction of Nuclear Radiation with...  
24) What is Cherenkov Radiaton? ►    • The Physics of Cherenkov Radiation  
25) Nuclear Detectors ►    • Nuclear Detectors - Ionization Chambe...  
26) Geiger Muller Counter ►    • What is a GM Counter? - Geiger Muller...  
27) Scintillation Detector ►    • What is a Scintillation Detector?  
28) Semiconductor Detectors ►    • What are Semiconductor Detectors?  
29) What are Accelerators? ►    • What are Accelerators? + Electrostati...  
30) Van de Graaff Generator ►    • Van de Graaff | Tandem & Pelletron Pa...  
31) Linear Accelerator ►    • Linear Particle Accelerator (Principl...  
32) Cyclotron ►    • Cyclotron (Principle, Construction, W...  
33) Synchrotron ►    • Cyclotron & Synchrotron (Particle Acc...  
34) Betatron ►    • Cyclotron & Synchrotron (Particle Acc...  
35) Fission & Fusion ►    • Nuclear Fission and Fusion | What rol...  
36) Proton-Proton & CNO Cycle ►    • Proton Proton Cycle & CNO Cycle  
37) Meson Theory of Nuclear Forces ►    • Meson Theory of Nuclear Forces & Esti...  

•••••••••••••••••••••••••••••••••••••••••••
NUCLEAR PHYSICS - PLAYLIST
   • Nuclear Physics  
•••••••••••••••••••••••••••••••••••••••••••
#NuclearPhysics