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💖https://www.patreon.com/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? ► https://youtu.be/6joildn5lqY 2) Nuclear Size / Radius ► https://youtu.be/1keKrGoqUAg 3) Quantization of Angular Momentum ► https://youtu.be/QHYJ4VpqAvs 4) Nuclear Spin and Angular Momentum ► https://youtu.be/LPYPhyioDfs 5) Nuclear Magnetic Moment ► https://youtu.be/3QniicZuVnc 6) Binding Energy of Nucleus & BE Curve ► https://youtu.be/BYRz_9wvJzA 7) Parity of Wave function ► https://youtu.be/BSTRJjElDdI 8) Symmetric & Anti symmetric Wave func ► https://youtu.be/wvnWCY9TKgw 9) Liquid Drop Model of Nucleus ► https://youtu.be/4q1i7yTcQmA 10) Corrections to Liquid Drop Model ► https://youtu.be/GeLC1AUC0W8 11) NZ Graph (& Maximizing BE) ► https://youtu.be/MHYrv_1VJdI 12) Fermi Energy of Nucleus ► https://youtu.be/aUPLjIjgYGk 13) Fermi Gas Model of Nucleus ► https://youtu.be/emSekijh7XI 14) Shell Model of Nucleus ► https://youtu.be/Rd0CJje59bE 15) Nature of (Strong) Nuclear Force) ► https://youtu.be/43AyN24jZw8 16) Alpha, Beta & Gamma Decay ► https://youtu.be/eUEgpcQHzIA 17) Gamow's Theory of Alpha Decay ► https://youtu.be/suj5MTLGAUU 18) Gamow's Theory (DERIVATION) ► https://youtu.be/QwT4tbA8UvI 19) Q Value and KE of Alpha Decay ► https://youtu.be/w0eEGiOYvus 20) Beta Decay & Neutrino Hypothesis ► https://youtu.be/avKic7oiwvA 21) Radioactive Decay Law ► https://youtu.be/fOMvJj39eTU 22) Nuclear Cross Section ► https://youtu.be/R0tdsaFJ4vg 23) Interaction of Nuclear Radiation with Matter ► https://youtu.be/Ara0eTv02No 24) What is Cherenkov Radiaton? ► https://youtu.be/AkR2daFw45U 25) Nuclear Detectors ► https://youtu.be/avvXftiyBEs 26) Geiger Muller Counter ► https://youtu.be/jxY6RC52Cf0 27) Scintillation Detector ► https://youtu.be/rjuFrk0-AOw 28) Semiconductor Detectors ► https://youtu.be/c1boCCYs77Q 29) What are Accelerators? ► https://youtu.be/-KslGjXEtKk 30) Van de Graaff Generator ► https://youtu.be/Q9bijrQfS6E 31) Linear Accelerator ► https://youtu.be/C79838wtRZo 32) Cyclotron ► https://youtu.be/L5zhpLfnqGc 33) Synchrotron ► https://youtu.be/rOXfm6EezeA 34) Betatron ► https://youtu.be/rOXfm6EezeA 35) Fission & Fusion ► https://youtu.be/L7_oi9zChqE 36) Proton-Proton & CNO Cycle ► https://youtu.be/aqnCfDqQlzA 37) Meson Theory of Nuclear Forces ► https://youtu.be/Wvjci2gP7eg ••••••••••••••••••••••••••••••••••••••••••• NUCLEAR PHYSICS - PLAYLIST https://www.youtube.com/playlist?list=PLRN3HroZGu2n_j3Snd_fSYNLvCkao8HIx ••••••••••••••••••••••••••••••••••••••••••• #NuclearPhysics